ignore tz db

.gitignore

@@ -1,3 +1,13 @@
+tz
+tzdb
+
+db.json
+*.bak
+*.tmp
+.*.sw*
+/cmd/again/again
+/again
+
 # ---> Go
 # Binaries for programs and plugins
 *.exe

again.go

@@ -3,10 +3,32 @@ package again
 import (
 	"fmt"
 	"time"
+
+	webhooks "git.rootprojects.org/root/go-again/webhooks"
 )
 
+type Webhook webhooks.Webhook
+
 type Schedule struct {
-	NextRunAt time.Time
+	ID        string    `json:"id" db:"id"`
+	AccessID  string    `json:"-" db:"access_id"`
+	Date      string    `json:"date" db:"date"`
+	Time      string    `json:"time" db:"time"`
+	TZ        string    `json:"tz" db:"tz"`
+	NextRunAt time.Time `json:"next_run_at" db:"next_run_at"`
+	Webhooks  []Webhook `json:"webhooks" db"webhooks"`
+}
+
+type Schedules []*Schedule
+
+func (s Schedules) Len() int {
+	return len(s)
+}
+func (s Schedules) Less(i, j int) bool {
+	return s[i].NextRunAt.Sub(s[j].NextRunAt) < 0
+}
+func (s Schedules) Swap(i, j int) {
+	s[j], s[i] = s[i], s[j]
 }
 
 // https://yourbasic.org/golang/time-change-convert-location-timezone/
@@ -38,7 +60,7 @@ func Run() {
 		[]int{2019, 11, 10, 23, 59, 59, 0},
 		[]int{2019, 11, 31, 23, 0, 0, 0},
 	} {
-		err := Exists(st, "America/Denver")
+		_, err := Exists(st, "America/Denver")
 		if nil != err {
 			fmt.Println(err)
 		}
@@ -107,58 +129,58 @@ func (err ErrNoExist) Error() string {
 //     fmt.Println(time.Date(2016, time.December, 31, 23, 59, 60, 0, time.UTC))
 //     "2020-12-02 02:00:00 +0000 UTC" // should be "2016-12-31 23:59:60 +0000 UTC"
 //
-func Exists(st []int, tzstr string) error {
+func Exists(st []int, tzstr string) (*time.Time, error) {
 	tz, err := time.LoadLocation(tzstr)
 	if nil != err {
-		return err
+		return nil, err
 	}
 
 	m := time.Month(st[1])
-	t1 := time.Date(st[0], m, st[2], st[3], st[4], st[5], st[6], tz)
+	t1 := time.Date(st[0], m, st[2], st[3], st[4], st[5], 0, tz)
 	if st[5] != t1.Second() {
-		return ErrNoExist{
+		return nil, ErrNoExist{
 			t: st,
 			z: tzstr,
 			e: "invalid second, probably just bad math on your part",
 		}
 	}
 	if st[4] != t1.Minute() {
-		return ErrNoExist{
+		return nil, ErrNoExist{
 			t: st,
 			z: tzstr,
 			e: "invalid minute, probably just bad math on your part, but perhaps a half-hour daylight savings or summer time",
 		}
 	}
 	if st[3] != t1.Hour() {
-		return ErrNoExist{
+		return nil, ErrNoExist{
 			t: st,
 			z: tzstr,
 			e: "invalid hour, possibly a Daylight Savings or Summer Time error, or perhaps bad math on your part",
 		}
 	}
 	if st[2] != t1.Day() {
-		return ErrNoExist{
+		return nil, ErrNoExist{
 			t: st,
 			z: tzstr,
 			e: "invalid day of month, most likely bad math on your part. Remember: 31 28¼ 31 30 31 30 31 31 30 31 30 31",
 		}
 	}
 	if st[1] != int(t1.Month()) {
-		return ErrNoExist{
+		return nil, ErrNoExist{
 			t: st,
 			z: tzstr,
 			e: "invalid month, most likely bad math on your part. Remember: Decemberween isn't until next year",
 		}
 	}
 	if st[0] != t1.Year() {
-		return ErrNoExist{
+		return nil, ErrNoExist{
 			t: st,
 			z: tzstr,
 			e: "invalid year, must have reached the end of time...",
 		}
 	}
 
-	return nil
+	return &t1, nil
 }
 
 // Check if the time happens more than once in a given timezone.
@@ -198,21 +220,21 @@ func IsAmbiguous(st []int, tzstr string) error {
 	if nil != err {
 		return err
 	}
+
 	m := time.Month(st[1])
-	t1 := time.Date(st[0], m, st[2], st[3], st[4], st[5], st[6], tz)
+	t1 := time.Date(st[0], m, st[2], st[3], st[4], st[5], 0, tz)
 	u1 := t1.UTC()
-	// A better way to do this would probably be to parse the timezone database, but... yeah...
+	// Australia/Lord_Howe has a 30-minute DST
-	for _, n := range []int{ /*-120, -60,*/ 30, 60, 120} {
+	// 60-minute DST is common
-		t2 := time.Date(st[0], m, st[2], st[3], st[4]+n, st[5], st[6], tz)
+	// Antarctica/Troll has a 120-minute DST
+	for _, n := range []int{30, 60, 120} {
+		t2 := time.Date(st[0], m, st[2], st[3], st[4]+n, st[5], 0, tz)
 		u2 := t2.UTC()
 		if u1.Equal(u2) {
-			fmt.Println("Ambiguous Time")
+			return fmt.Errorf("Ambiguous: %s, %s, %+d\n", t1, t2, n)
-			fmt.Printf("%s, %s, %+d\n", t1, u1, n)
-			fmt.Printf("%s, %s, %+d\n", t2, u2, n)
-			return fmt.Errorf("Ambiguous")
 		}
 	}
-	//ta :=
+
 	return nil
 }
 

cmd/again/again.go

@@ -1,22 +1,30 @@
 package main
 
 import (
+	"context"
+	"encoding/json"
 	"flag"
 	"fmt"
 	"log"
+	"math/rand"
 	"net/http"
 	"os"
 	"strconv"
+	"strings"
 	"time"
 
+	again "git.rootprojects.org/root/go-again"
 	"git.rootprojects.org/root/go-again/data/jsondb"
+	webhooks "git.rootprojects.org/root/go-again/webhooks"
 )
 
 func main() {
 	portEnv := os.Getenv("PORT")
+	dbEnv := os.Getenv("DATABASE_URL")
 
 	portInt := flag.Int("port", 0, "port on which to serve http")
 	addr := flag.String("addr", "", "address on which to serve http")
+	dburl := flag.String("database-url", "", "For example: json://relative-path/db.json or json:///absolute-path/db.json")
 	flag.Parse()
 
 	if "" != portEnv {
@@ -32,24 +40,300 @@ func main() {
 		*portInt = n
 	}
 	if *portInt < 1024 || *portInt > 65535 {
-		log.Fatalf("port should be between 1024 and 65535, not %d.", *portInt)
+		log.Fatalf("`port` should be between 1024 and 65535, not %d.", *portInt)
 		return
 	}
 	portEnv = strconv.Itoa(*portInt)
 
+	if "" != dbEnv {
+		if "" != *dburl {
+			log.Fatal("You may set DATABASE_URL or --database-url, but not both.")
+			return
+		}
+		*dburl = dbEnv
+		// TODO parse string?
+		// TODO have each connector try in sequence by registering with build tags like go-migrate does?
+	}
+	if "" == *dburl {
+		log.Fatalf("`database-url` must be specified." +
+			" Something like --database-url='json:///var/go-again/db.json' should do nicely.")
+		return
+	}
+
+	db, err := jsondb.Connect(*dburl)
+	if nil != err {
+		log.Fatalf("Could not connect to database %q: %s", *dburl, err)
+		return
+	}
+
+	s := &scheduler{
+		DB: db,
+	}
+	mux := http.NewServeMux()
 	server := &http.Server{
 		Addr:           fmt.Sprintf("%s:%s", *addr, portEnv),
-		Handler:        http.HandlerFunc(handleFunc),
+		Handler:        mux,
 		ReadTimeout:    10 * time.Second,
 		WriteTimeout:   10 * time.Second,
 		MaxHeaderBytes: 1 << 20,
 	}
+	//mux.Handle("/api/", http.HandlerFunc(handleFunc))
+	mux.HandleFunc("/api/v0/schedules", s.Handle)
+	mux.HandleFunc("/api/v0/schedules/", s.Handle)
+
+	// TODO Filebox FS
+	mux.Handle("/", http.FileServer(http.Dir("./public")))
+
+	go s.RunTasks()
 
 	fmt.Println("Listening on", server.Addr)
 	log.Fatal(server.ListenAndServe())
 }
 
-func handleFunc(w http.ResponseWriter, r *http.Request) {
+type ScheduleDB interface {
-	jsondb.List()
+	List(string) ([]*again.Schedule, error)
-	w.Write([]byte("Hello, World!"))
+	Set(again.Schedule) (*again.Schedule, error)
+	Delete(accessID string, id string) (*again.Schedule, error)
+	Upcoming(min time.Time, max time.Time) ([]*again.Schedule, error)
+}
+
+type scheduler struct {
+	DB ScheduleDB
+}
+
+func (s *scheduler) RunTasks() {
+	log.Println("[info] Task Queue Started")
+	// Tick every 4 minutes,
+	// but run tasks for up to 5 minutes before getting more.
+	ticker := time.NewTicker(4 * time.Minute)
+
+	// TODO some way to add things to the live queue
+	// (maybe a select between the ticker and an incoming channel)
+
+	// 'min' should be >= 'last'  at least one second
+	last := time.Now()
+	for {
+		min := time.Now()
+		if last.Unix() > min.Unix() {
+			min = last
+		}
+		max := min.Add(5 * time.Minute)
+		scheds, err := s.DB.Upcoming(min, max)
+		if nil != err {
+			// this seems pretty unrecoverable
+			// TODO check DB, reconnect
+			os.Exit(911)
+			return
+		}
+		log.Printf("[info] Got %d upcoming tasks", len(scheds))
+		log.Println(time.Now())
+		log.Println(min)
+		log.Println(max)
+		log.Println()
+		log.Println(time.Now().UTC())
+		log.Println(min.UTC())
+		log.Println(max.UTC())
+
+		for i := range scheds {
+			sched := scheds[i]
+			fmt.Println("it's in the queue")
+			sleep := sched.NextRunAt.Sub(time.Now())
+			// TODO create ticker to select on instead
+			time.Sleep(sleep)
+
+			fmt.Println("it's happening")
+			for i := range sched.Webhooks {
+				h := sched.Webhooks[i]
+				h.TZ = sched.TZ
+				webhooks.Run(webhooks.Webhook(h))
+			}
+
+			// we only deal in second resulotion
+			last = sched.NextRunAt.Add(1 * time.Second)
+		}
+
+		<-ticker.C
+	}
+}
+
+func (s *scheduler) Handle(w http.ResponseWriter, r *http.Request) {
+	// note: no go-routines reading body in handlers to follow
+	defer r.Body.Close()
+
+	token := strings.TrimPrefix(r.Header.Get("Authorization"), "Bearer ")
+	if 32 != len(token) {
+		http.Error(w, "Authorization Header did not contain a valid token", http.StatusForbidden)
+		return
+	}
+	ctx := r.Context()
+	ctx = context.WithValue(ctx, "token", token)
+	r = r.WithContext(ctx)
+
+	switch r.Method {
+	case http.MethodGet:
+		s.List(w, r)
+		return
+	case http.MethodPost:
+		s.Create(w, r)
+		return
+	case http.MethodDelete:
+		s.Delete(w, r)
+		return
+	default:
+		http.Error(w, "Not Implemented", http.StatusNotImplemented)
+		return
+	}
+}
+
+func (s *scheduler) List(w http.ResponseWriter, r *http.Request) {
+	accessID := r.Context().Value("token").(string)
+	schedules, err := s.DB.List(accessID)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	buf, err := json.Marshal(schedules)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Write(buf)
+}
+
+func (s *scheduler) Create(w http.ResponseWriter, r *http.Request) {
+	// TODO validate user
+	accessID := r.Context().Value("token").(string)
+
+	/*
+		br, bw := io.Pipe()
+		b := io.TeeReader(r.Body, bw)
+		go func() {
+			x, _ := ioutil.ReadAll(b)
+			fmt.Println("[debug] http body", string(x))
+			bw.Close()
+		}()
+		decoder := json.NewDecoder(br)
+	*/
+	decoder := json.NewDecoder(r.Body)
+	sched := &again.Schedule{}
+	err := decoder.Decode(sched)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	fmt.Printf("New Schedule:\n%#v\n", sched)
+
+	// TODO validate and modify
+	dateParts := strings.Split(sched.Date, "-")
+	if 3 != len(dateParts) {
+		http.Error(w, "Invalid date", http.StatusBadRequest)
+		return
+	}
+
+	timeParts := strings.Split(sched.Time, ":")
+	if 2 == len(timeParts) {
+		timeParts = append(timeParts, "00")
+	}
+	if 3 != len(timeParts) {
+		http.Error(w, "Invalid time", http.StatusBadRequest)
+		return
+	}
+	// sub-minute resolution not supported yet
+	timeParts[2] = "00"
+
+	dtParts := []int{0, 0, 0, 0, 0, 0}
+	for i := range dateParts {
+		n, err := strconv.Atoi(dateParts[i])
+		if nil != err {
+			http.Error(w, fmt.Sprintf("Invalid date part '%s'", n), http.StatusBadRequest)
+			return
+		}
+		dtParts[i] = n
+	}
+	for i := range timeParts {
+		n, err := strconv.Atoi(timeParts[i])
+		if nil != err {
+			http.Error(w, fmt.Sprintf("Invalid time part '%s'", n), http.StatusBadRequest)
+			return
+		}
+		dtParts[i+3] = n
+	}
+
+	_, err = again.Exists(dtParts, time.UTC.String())
+	if nil != err {
+		http.Error(w, fmt.Sprintf("Invalid datetime: %s", err), http.StatusBadRequest)
+		return
+	}
+
+	// TODO warn on non-existant / ambiguous timing
+	loc, err := time.LoadLocation(sched.TZ)
+	if nil != err {
+		http.Error(w, fmt.Sprintf("Invalid timezone: %s", err), http.StatusBadRequest)
+		return
+	}
+
+	t := time.Date(dtParts[0], time.Month(dtParts[1]), dtParts[2], dtParts[3], dtParts[4], dtParts[5], 0, loc).UTC()
+	now := time.Now().UTC()
+	// 4.5 minutes (about 5 minutes)
+	ahead := t.Sub(now)
+	if ahead < 270 {
+		http.Error(w,
+			fmt.Sprintf("Invalid datetime: should be 5+ minutes into the future, not just %d seconds", ahead),
+			http.StatusBadRequest)
+		return
+	}
+
+	fmt.Println("Time in UTC:", t)
+	// stagger
+	t = t.Add(time.Duration(rand.Intn(300*1000)-150*1000) * time.Millisecond)
+	// Avoid the Leap Second
+	if 23 == t.Hour() && 59 == t.Minute() && 59 == t.Second() {
+		j := rand.Intn(1) - 2
+		n := rand.Intn(3)
+		// +/- 3 seconds
+		t = t.Add(time.Duration(j*n) * time.Second)
+	}
+	fmt.Println("Staggered Time:", t)
+
+	// TODO add to immediate queue if soon enough
+	sched.NextRunAt = t
+	sched.AccessID = accessID
+	sched2, err := s.DB.Set(*sched)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	buf, err := json.Marshal(sched2)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Write(buf)
+}
+
+func (s *scheduler) Delete(w http.ResponseWriter, r *http.Request) {
+	// TODO validate user
+	accessID := r.Context().Value("token").(string)
+	parts := strings.Split(r.URL.Path, "/")
+
+	// ""/"api"/"v0"/"schedules"/":id"
+	if 5 != len(parts) {
+		http.Error(w, "Not Found", http.StatusNotFound)
+		return
+	}
+
+	id := parts[4]
+	sched2, err := s.DB.Delete(accessID, id)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	buf, err := json.Marshal(sched2)
+	if nil != err {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Write(buf)
 }

data/jsondb/jsondb.go

@@ -1,11 +1,290 @@
+// A JSON storage strategy for Go Again
+// SQL would be a better choice, but... meh
+//
+// Note that we use mutexes instead of channels
+// because everything is both synchronous and
+// sequential. Meh.
 package jsondb
 
 import (
-	"errors"
+	"crypto/rand"
+	"crypto/subtle"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+	"time"
 
-	again "git.rootprojects.org/root/go-again"
+	"git.rootprojects.org/root/go-again"
 )
 
-func List() ([]again.Schedule, error) {
+type JSONDB struct {
-	return nil, errors.New("Not Implemented")
+	dburl string
+	path  string
+	json  *dbjson
+	mux   sync.Mutex
+	fmux  sync.Mutex
+}
+
+type dbjson struct {
+	Schedules []Schedule `json:"schedules"`
+}
+
+func Connect(dburl string) (*JSONDB, error) {
+	u, err := url.Parse(dburl)
+	if nil != err {
+		return nil, err
+	}
+
+	// json:/abspath/to/db.json
+	path := u.Opaque
+	if "" == path {
+		// json:///abspath/to/db.json
+		path = u.Path
+		if "" == path {
+			// json:relpath/to/db.json
+			// json://relpath/to/db.json
+			path = strings.TrimSuffix(u.Host+"/"+u.Path, "/")
+		}
+	}
+
+	f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, 0700)
+	if nil != err {
+		return nil, fmt.Errorf("Couldn't open %q: %s", path, err)
+	}
+
+	stat, err := f.Stat()
+	if 0 == stat.Size() {
+		_, err := f.Write([]byte(`{"schedules":[]}`))
+		f.Close()
+		if nil != err {
+			return nil, err
+		}
+
+		f, err = os.OpenFile(path, os.O_RDWR|os.O_CREATE, 0700)
+		if nil != err {
+			return nil, err
+		}
+	}
+
+	decoder := json.NewDecoder(f)
+	db := &dbjson{}
+	err = decoder.Decode(db)
+	f.Close()
+	if nil != err {
+		return nil, fmt.Errorf("Couldn't parse %q as JSON: %s", path, err)
+	}
+
+	wd, _ := os.Getwd()
+	fmt.Println("jsondb:", filepath.Join(wd, path))
+	return &JSONDB{
+		dburl: dburl,
+		path:  path,
+		json:  db,
+		mux:   sync.Mutex{},
+		fmux:  sync.Mutex{},
+	}, nil
+}
+
+// A copy of again.Schedule, but with access_id json-able
+type Schedule struct {
+	ID        string          `json:"id" db:"id"`
+	AccessID  string          `json:"access_id" db:"access_id"`
+	Date      string          `json:"date" db:"date"`
+	Time      string          `json:"time" db:"time"`
+	TZ        string          `json:"tz" db:"tz"`
+	NextRunAt time.Time       `json:"next_run_at" db:"next_run_at"`
+	Disabled  bool            `json:"disabled" db:"disabled"`
+	Webhooks  []again.Webhook `json:"webhooks" db"webhooks"`
+}
+
+func (db *JSONDB) List(accessID string) ([]*again.Schedule, error) {
+	nowish := time.Now().Add(time.Duration(30) * time.Second)
+	schedules := []*again.Schedule{}
+	for i := range db.json.Schedules {
+		s := db.json.Schedules[i]
+		if !s.Disabled && ctcmp(accessID, s.AccessID) && s.NextRunAt.Sub(nowish) > 0 {
+			schedules = append(schedules, &again.Schedule{
+				ID:        s.ID,
+				AccessID:  s.AccessID,
+				Date:      s.Date,
+				Time:      s.Time,
+				TZ:        s.TZ,
+				NextRunAt: s.NextRunAt,
+				Webhooks:  s.Webhooks,
+			})
+		}
+	}
+	return schedules, nil
+}
+
+func (db *JSONDB) Set(s again.Schedule) (*again.Schedule, error) {
+	exists := false
+	index := -1
+	if "" == s.ID {
+		id, err := genID(16)
+		if nil != err {
+			return nil, err
+		}
+		s.ID = id
+	} else {
+		i, old := db.get(s.ID)
+		index = i
+		exists = nil != old
+		// TODO constant time bail
+		if !exists || !ctcmp(old.AccessID, s.AccessID) {
+			return nil, fmt.Errorf("invalid id")
+		}
+	}
+
+	schedule := Schedule{
+		ID:        s.ID,
+		AccessID:  s.AccessID,
+		Date:      s.Date,
+		Time:      s.Time,
+		TZ:        s.TZ,
+		NextRunAt: s.NextRunAt,
+		Webhooks:  s.Webhooks,
+	}
+
+	if exists {
+		db.mux.Lock()
+		db.json.Schedules[index] = schedule
+		db.mux.Unlock()
+	} else {
+		db.mux.Lock()
+		db.json.Schedules = append(db.json.Schedules, schedule)
+		db.mux.Unlock()
+	}
+
+	err := db.save(s.AccessID)
+	if nil != err {
+		return nil, err
+	}
+
+	return &s, nil
+}
+
+func (db *JSONDB) Delete(accessID string, id string) (*again.Schedule, error) {
+	_, old := db.get(id)
+	exists := nil != old
+	// TODO constant time bail
+	if !exists || !ctcmp(old.AccessID, accessID) {
+		return nil, fmt.Errorf("invalid id")
+	}
+
+	// Copy everything we keep into its own array
+	newSchedules := []Schedule{}
+	for i := range db.json.Schedules {
+		schedule := db.json.Schedules[i]
+		if old.ID != schedule.ID {
+			newSchedules = append(newSchedules, schedule)
+		}
+	}
+	db.mux.Lock()
+	db.json.Schedules = newSchedules
+	db.mux.Unlock()
+
+	err := db.save(accessID)
+	if nil != err {
+		return nil, err
+	}
+
+	return &again.Schedule{
+		ID:        old.ID,
+		AccessID:  old.AccessID,
+		Date:      old.Date,
+		Time:      old.Time,
+		TZ:        old.TZ,
+		NextRunAt: old.NextRunAt,
+		Webhooks:  old.Webhooks,
+	}, nil
+}
+
+func (db *JSONDB) Upcoming(min time.Time, max time.Time) ([]*again.Schedule, error) {
+	schedules := []*again.Schedule{}
+	for i := range db.json.Schedules {
+		s := db.json.Schedules[i]
+		if !s.Disabled && s.NextRunAt.Sub(min) > 0 && max.Sub(s.NextRunAt) > 0 {
+			schedules = append(schedules, &again.Schedule{
+				ID:        s.ID,
+				AccessID:  s.AccessID,
+				Date:      s.Date,
+				Time:      s.Time,
+				TZ:        s.TZ,
+				NextRunAt: s.NextRunAt,
+				Webhooks:  s.Webhooks,
+			})
+		}
+	}
+	sort.Sort(again.Schedules(schedules))
+	return []*again.Schedule(schedules), nil
+}
+
+func ctcmp(x string, y string) bool {
+	return 1 == subtle.ConstantTimeCompare([]byte(x), []byte(y))
+}
+
+func (db *JSONDB) get(id string) (int, *Schedule) {
+	db.mux.Lock()
+	scheds := db.json.Schedules
+	db.mux.Unlock()
+	for i := range scheds {
+		schedule := scheds[i]
+		if ctcmp(id, schedule.ID) {
+			return i, &schedule
+		}
+	}
+	return -1, nil
+}
+
+func genID(n int) (string, error) {
+	b := make([]byte, n)
+	_, err := rand.Read(b)
+	if nil != err {
+		return "", err
+	}
+	return hex.EncodeToString(b), nil
+}
+
+func (db *JSONDB) save(accessID string) error {
+	// TODO per-user files, maybe
+	// or probably better to spend that time building the postgres adapter
+	rnd, err := genID(4)
+	tmppath := db.path + "." + rnd + ".tmp"
+	bakpath := db.path + ".bak"
+
+	os.Remove(tmppath) // ignore error
+	f, err := os.OpenFile(tmppath, os.O_RDWR|os.O_CREATE, 0700)
+	if nil != err {
+		return err
+	}
+
+	encoder := json.NewEncoder(f)
+	err = encoder.Encode(db.json)
+	f.Close()
+	if nil != err {
+		return err
+	}
+
+	// TODO could make async and debounce...
+	// or spend that time on something useful
+	db.fmux.Lock()
+	defer db.fmux.Unlock()
+	os.Remove(bakpath) // ignore error
+	err = os.Rename(db.path, bakpath)
+	if nil != err {
+		return err
+	}
+	err = os.Rename(tmppath, db.path)
+	if nil != err {
+		return err
+	}
+
+	return nil
 }

public/.prettierrc

@@ -0,0 +1,8 @@
+{
+  "bracketSpacing": true,
+  "printWidth": 120,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "none",
+  "useTabs": true
+}

public/ajquery.js

@@ -0,0 +1,13 @@
+'use strict';
+
+var $ = function(sel, el) {
+	return (el || window.document).querySelector(sel);
+};
+$.create = function(html) {
+	var div = document.createElement('div');
+	div.innerHTML = html;
+	return div;
+};
+var $$ = function(sel, el) {
+	return (el || window.document).querySelectorAll(sel);
+};

public/app.js

@@ -0,0 +1,349 @@
+(function() {
+	'use strict';
+
+	// AJ Query
+	var $ = window.$;
+	var $$ = window.$$;
+
+	var state = { account: { schedules: [] } };
+
+	var $schedTpl;
+	var $headerTpl;
+	var $webhookTpl;
+	var $webhookHeaderTpl;
+
+	function pad(i) {
+		i = String(i);
+		while (i.length < 2) {
+			i = '0' + i;
+		}
+		return i;
+	}
+
+	function run() {
+		$headerTpl = $('.js-new-webhook .js-header').outerHTML;
+
+		$webhookHeaderTpl = $('.js-schedule .js-webhook .js-header').outerHTML;
+		$('.js-schedule .js-webhooks .js-headers').innerHTML = '';
+		$webhookTpl = $('.js-schedule .js-webhook').outerHTML;
+		$('.js-schedule .js-webhooks').innerHTML = '';
+
+		// after blanking all inner templates
+		$schedTpl = $('.js-schedule').outerHTML;
+
+		var $form = $('.js-new-schedule');
+		// Pick a date and time on an even number
+		// between 10 and 15 minutes in the future
+		var d = new Date(Date.now() + 10 * 60 * 1000);
+		var minutes = d.getMinutes() + (5 - (d.getMinutes() % 5)) - d.getMinutes();
+		d = new Date(d.valueOf() + minutes * 60 * 1000);
+		$('.js-date', $form).value = d.getFullYear() + '-' + pad(d.getMonth() + 1) + '-' + pad(d.getDate());
+		$('.js-time', $form).value = pad(d.getHours()) + ':' + pad(d.getMinutes());
+		$('.js-url', $form).value = 'https://enfqtbjh5ghw.x.pipedream.net';
+
+		console.log('hello');
+
+		$('body').addEventListener('click', function(ev) {
+			if (ev.target.matches('.js-new-header')) {
+				newWebhookHeader(ev.target);
+			} else if (ev.target.matches('.js-rm-header')) {
+				rmWebhookHeader(ev.target);
+			} else if (ev.target.matches('.js-delete') && ev.target.closest('.js-schedule')) {
+				deleteSchedule(ev.target.closest('.js-schedule'));
+			} else {
+				return;
+			}
+			ev.preventDefault();
+			ev.stopPropagation();
+		});
+
+		$('body').addEventListener('change', function(ev) {
+			var $hook = ev.target.closest('.js-new-webhook');
+			if (ev.target.matches('.js-url') && $hook) {
+				if (!$('.js-comment', $hook).value) {
+					$('.js-comment', $hook).value = ev.target.value.replace(/https:\/\//, '').replace(/\/.*/, '');
+				}
+			}
+		});
+
+		$('body').addEventListener('submit', function(ev) {
+			if (ev.target.matches('.js-new-schedule')) {
+				console.log('new schedule');
+				newSchedule(ev.target);
+			} else if (ev.target.matches('.js-schedules-list')) {
+				doLogin();
+			} else {
+				return;
+			}
+
+			ev.preventDefault();
+			ev.stopPropagation();
+		});
+	}
+
+	function newSchedule() {
+		var $hook = $('.js-new-schedule');
+		//var deviceId = $hook.closest('.js-new-schedule').querySelector('.js-id').value;
+		var schedule = {
+			date: $('.js-date', $hook).value,
+			time: $('.js-time', $hook).value,
+			tz: $('.js-tz', $hook).value,
+			webhooks: []
+		};
+		var hook = {
+			comment: $('.js-comment', $hook).value,
+			method: $('.js-method', $hook).value,
+			url: $('.js-url', $hook).value,
+			headers: {}
+		};
+		schedule.webhooks.push(hook);
+		console.log('schedule:', schedule);
+		$$('.js-header', $hook).forEach(function($head) {
+			var key = $('.js-key', $head).value;
+			var val = $('.js-value', $head).value;
+			if (key && val) {
+				hook.headers[key] = val;
+			}
+		});
+
+		var auth = {
+			user: $('.js-http-user', $hook).value || '',
+			pass: $('.js-http-pass', $hook).value || ''
+		};
+		if (auth.user || auth.pass) {
+			hook.auth = auth;
+		}
+
+		var body = $('.js-body-template', $hook).value;
+		if ('json' === $('.js-body-type:checked', $hook).value) {
+			hook.json = (body && JSON.parse(body)) || undefined;
+		} else {
+			// TODO try query parse
+			hook.form = (body && JSON.parse(body)) || undefined;
+			// TODO raw string as well
+		}
+		// TODO update on template change and show preview
+
+		var opts = {
+			method: 'POST',
+			headers: {
+				Accept: 'application/json',
+				Authorization: getToken(),
+				'Content-Type': 'application/json'
+			},
+			body: JSON.stringify(schedule),
+			cors: true
+		};
+
+		/*
+      state.account.devices
+        .filter(function(d) {
+          return d.accessToken == deviceId;
+        })[0]
+        .webhooks.push(hook);
+
+      displayAccount(state.account);
+      return;
+    */
+
+		window.fetch('/api/v0/schedules', opts).then(function(resp) {
+			return resp
+				.json()
+				.then(function(data) {
+					if (!data.date || !data.webhooks) {
+						console.error(data);
+						throw new Error('something bad happened');
+					}
+
+					state.account.schedules.push(data);
+
+					displayAccount(state.account);
+				})
+				.catch(function(e) {
+					console.error(e);
+					window.alert(e.message);
+				});
+		});
+	}
+
+	function newWebhookHeader($newHeader) {
+		var $hs = $newHeader.closest('.js-headers');
+		var $h = $newHeader.closest('.js-header');
+		var $div = document.createElement('div');
+		$div.innerHTML = $headerTpl;
+		$hs.append($('.js-header', $div));
+		$newHeader.hidden = true;
+		$('.js-rm-header', $h).hidden = false;
+		$('.js-key', $h).required = 'required';
+		$('.js-value', $h).required = 'required';
+	}
+
+	function rmWebhookHeader($rmHeader) {
+		var $h = $rmHeader.closest('.js-header');
+		$h.parentElement.removeChild($h);
+	}
+	function deleteSchedule($sched) {
+		var schedId = $('.js-id', $sched).value;
+		var opts = {
+			method: 'DELETE',
+			headers: {
+				Accept: 'application/json',
+				Authorization: getToken()
+			},
+			cors: true
+		};
+		window.fetch('/api/v0/schedules/' + schedId, opts).then(function(resp) {
+			return resp.json().then(function(result) {
+				if (!result.webhooks) {
+					console.error(result);
+					window.alert('something went wrong: ' + JSON.stringify(result));
+					return;
+				}
+				state.account.schedules = state.account.schedules.filter(function(g) {
+					return g.id !== result.id;
+				});
+				displayAccount(state.account);
+			});
+		});
+	}
+
+	function displayAccount(data) {
+		state.account = data;
+		console.log('[debug] Display Account:');
+		console.log(data);
+		var $devs = $('.js-schedules');
+		$devs.innerHTML = '';
+		data.schedules.forEach(function(d) {
+			console.log('schedule', d);
+			var $dev = $.create($schedTpl);
+			$('.js-id', $dev).value = d.id;
+			$('.js-date', $dev).value = d.date;
+			$('.js-time', $dev).value = d.time;
+			$('.js-tz', $dev).value = d.tz;
+			d.webhooks.forEach(function(h) {
+				console.log('webhook', h);
+				var $hook = $.create($webhookTpl);
+				$('.js-id', $hook).innerText = h.id;
+				$('.js-comment', $hook).innerText = h.comment;
+				$('.js-method', $hook).innerText = h.method;
+				$('.js-url', $hook).innerText = h.url;
+				Object.keys(h.headers || {}).forEach(function(k) {
+					var $header = $.create($webhookHeaderTpl);
+					var v = h.headers[k];
+					$('.js-key', $header).innerText = k;
+					$('.js-value', $header).innerText = v;
+					$('.js-headers', $hook).innerHTML += $header.innerHTML;
+				});
+				$('.js-body-template', $hook).innerText = h.body || '';
+				$('.js-webhooks', $dev).innerHTML += $hook.innerHTML;
+			});
+			$devs.appendChild($dev);
+		});
+	}
+
+	console.info('[tzdb] requesting');
+	window.fetch('./tzdb.json').then(function(resp) {
+		return resp.json().then(function(tzdb) {
+			console.info('[tzdb] received');
+			var tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
+			var options = $$('.js-tz option');
+			var valOpt = options[0].outerHTML; // UTC
+			//var spaceOpt = options[1].outerHTML; // ----
+			var innerHTML = $('.js-new-schedule .js-tz').innerHTML;
+			/*
+			innerHTML =
+				'<option selected value="' +
+				tz +
+				'">&nbsp;&nbsp;&nbsp;&nbsp;' +
+				tz +
+				'</option>' +
+				spaceOpt +
+				innerHTML.replace(/>UTC/, '>&nbsp;&nbsp;&nbsp;&nbsp;UTC');
+      */
+			//$('.js-tz').innerHTML += spaceOpt;
+			//$('.js-tz').innerHTML += valOpt.replace(/UTC/g, 'custom');
+			Object.keys(tzdb)
+				.sort()
+				.forEach(function(k) {
+					var parts = k.split(' ');
+					//var sep = '── ' + parts[0];
+					var sep = parts[0];
+					if (parts[0] !== parts[1]) {
+						sep += ' / ' + parts[1] + ' (DST)';
+					}
+					//innerHTML += '<option disabled>' + sep + '</option>';
+					innerHTML += '<optgroup label="' + sep + '">';
+					var areas = tzdb[k];
+					areas.forEach(function(_tz) {
+						if (tz !== _tz) {
+							innerHTML += valOpt.replace(/UTC/g, _tz);
+						} else {
+							innerHTML += '<option selected value="' + tz + '">' + tz + '</option>';
+						}
+					});
+					innerHTML += '</optgroup>';
+				});
+			$('.js-new-schedule .js-tz').innerHTML = innerHTML;
+
+			console.info('[tzdb] loaded');
+			run();
+		});
+	});
+
+	var allSchedules = [];
+
+	function getToken() {
+		return JSON.parse(localStorage.getItem('session')).access_token;
+	}
+
+	function doLogin() {
+		localStorage.setItem(
+			'session',
+			JSON.stringify({
+				access_token: $('.js-auth-token').value
+			})
+		);
+		$('.js-schedules-list').hidden = true;
+		return window
+			.fetch('/api/v0/schedules', {
+				headers: { Authorization: getToken() }
+			})
+			.then(function(resp) {
+				return resp
+					.clone()
+					.json()
+					.then(function(schedules) {
+						console.log('schedules');
+						console.log(schedules);
+						allSchedules = schedules;
+						renderSchedules(schedules);
+						state.account.schedules = schedules;
+						displayAccount(state.account);
+						$('.js-account').hidden = false;
+					})
+					.catch(function(e) {
+						console.error("Didn't parse JSON:");
+						console.error(e);
+						console.log(resp);
+						$('.js-schedules-list').hidden = false;
+						window.alert(resp.status + ': ' + resp.statusText);
+						return resp.text().then(function(text) {
+							window.alert(text);
+						});
+					});
+			})
+			.catch(function(e) {
+				console.error('Request Error');
+				console.error(e);
+				window.alert('Network error. Are you online?');
+			});
+	}
+
+	function renderSchedules(schedules) {
+		document.querySelector('.js-schedules-output').innerText = JSON.stringify(schedules, null, 2);
+	}
+
+	console.log('whatever');
+	$('.js-auth-token').value = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx';
+	//window.addEventListener('load', run);
+})();

public/index.html

@@ -0,0 +1,136 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<title>Go Again</title>
+	</head>
+	<body>
+		<h1>Go Again</h1>
+		<h2>Webhooks, on time!</h2>
+
+		<form class="js-schedules-list">
+			<label
+				>Token:
+				<input class="js-auth-token" type="text" required />
+			</label>
+			<button>Login</button>
+		</form>
+
+		<div class="js-account" hidden>
+			<details>
+				<summary>Schedules</summary>
+				<h3>Schedules</h3>
+				<div class="js-schedules">
+					<div class="js-schedule">
+						<input type="hidden" class="js-id" />
+						<input type="date" class="js-date" readonly />
+						<input type="time" class="js-time" readonly />
+						<input type="text" class="js-tz" readonly />
+
+						<div class="doc-webhooks-container">
+							<div class="js-webhooks">
+								<div class="js-webhook">
+									<h4><span class="js-comment"></span></h4>
+									<span class="js-id" hidden></span>
+									<span class="js-method"></span>
+									<span class="js-url"></span>
+									<br />
+									<div class="js-headers">
+										<div class="js-header">
+											<span class="js-key"></span>
+											<span class="js-value"></span>
+										</div>
+									</div>
+									<pre><code class="js-body-template"></code></pre>
+								</div>
+							</div>
+						</div>
+						<button class="js-delete" type="button">Delete Schedule</button>
+						<br />
+						<br />
+					</div>
+				</div>
+				<br />
+			</details>
+
+			<details>
+				<summary>Add Schedule</summary>
+				<h3>Add Schedule</h3>
+				<form class="js-new-schedule">
+					<label>Date: <input type="date" class="js-date" required/></label>
+					<label>Time: <input type="time" class="js-time" step="300" required/></label>
+					<!-- TODO combo box -->
+					<label
+						>Location:
+						<select class="js-tz">
+							<option value="UTC">UTC</option>
+							<option disabled>──────────</option>
+						</select>
+					</label>
+					<br />
+
+					<h3>Webhook</h3>
+					<div class="js-new-webhook">
+						<!--
+							<select class="js-template">
+								<option value="webhook" selected>Custom Webhook</option>
+								<option value="requestbin">RequestBin</option>
+								<option value="mailgun">Maligun</option>
+								<option value="twilio">Twilio</option>
+								<option value="pushbullet">Pushbullet</option>
+							</select>
+							<br />
+              -->
+						<input class="js-comment" type="text" placeholder="Webhook Name" required />
+						<br />
+						<select class="js-method">
+							<option value="POST" selected>POST</option>
+							<option value="PUT">PUT</option>
+						</select>
+						<input placeholder="https://example.com/api/v1/updates" class="js-url" type="url" required />
+						<br />
+						HTTP Basic Auth (optional):
+						<input placeholder="username" class="js-http-user" type="text" />
+						<input placeholder="password" class="js-http-pass" type="text" />
+						<div class="js-headers">
+							<div class="js-header">
+								<input placeholder="Header" class="js-key" type="text" />
+								<input placeholder="Value" class="js-value" type="text" />
+								<button type="button" class="js-rm-header" hidden>[x]</button>
+								<button type="button" class="js-new-header">[+]</button>
+							</div>
+						</div>
+						<div class="js-body">
+							Request Body Type:
+							<label><input name="-body-type" class="js-body-type" type="radio" value="json" checked /> JSON</label>
+							<label><input name="-body-type" class="js-body-type" type="radio" value="form" /> Form</label>
+							<br />
+							<textarea
+								placeholder="Body template, use '{{ keyname }}' for template values."
+								class="js-body-template"
+							></textarea>
+							<!-- TODO preview template -->
+						</div>
+					</div>
+
+					<br />
+					<button class="js-create">Save Schedule</button>
+				</form>
+				<br />
+				<br />
+				<br />
+			</details>
+
+			<details>
+				<summary>Debug Info</summary>
+				<h3>Debug Info</h3>
+				<pre><code class="js-schedules-output"> </code></pre>
+				<br />
+				<br />
+				<br />
+			</details>
+		</div>
+
+		<script src="./ajquery.js"></script>
+		<script src="./app.js"></script>
+	</body>
+</html>

public/tzdb.json

@@ -0,0 +1,54 @@
+{"+00:00 +00:00":["Africa/Abidjan","Africa/Accra","Africa/Bissau","Africa/Monrovia","America/Danmarkshavn","Atlantic/Reykjavik"],
+"+01:00 +01:00":["Africa/Algiers","Africa/Casablanca","Africa/Lagos","Africa/Ndjamena","Africa/Tunis"],
+"+02:00 +02:00":["Africa/Cairo","Africa/Johannesburg","Africa/Khartoum","Africa/Maputo","Africa/Tripoli","Africa/Windhoek","Asia/Famagusta","Europe/Kaliningrad"],
+"+01:00 +02:00":["Africa/Ceuta","Europe/Amsterdam","Europe/Andorra","Europe/Belgrade","Europe/Berlin","Europe/Brussels","Europe/Budapest","Europe/Copenhagen","Europe/Gibraltar","Europe/Luxembourg","Europe/Madrid","Europe/Malta","Europe/Monaco","Europe/Oslo","Europe/Paris","Europe/Prague","Europe/Rome","Europe/Stockholm","Europe/Tirane","Europe/Vienna","Europe/Warsaw","Europe/Zurich"],
+"+00:00 +01:00":["Africa/El_Aaiun","Atlantic/Canary","Atlantic/Faroe","Atlantic/Madeira","Europe/Dublin","Europe/Lisbon","Europe/London"],
+"+03:00 +03:00":["Africa/Juba","Africa/Nairobi","Antarctica/Syowa","Asia/Baghdad","Asia/Qatar","Asia/Riyadh","Europe/Istanbul","Europe/Kirov","Europe/Minsk","Europe/Moscow","Europe/Simferopol"],
+"−10:00 −09:00":["America/Adak"],
+"−09:00 −08:00":["America/Anchorage","America/Juneau","America/Metlakatla","America/Nome","America/Sitka","America/Yakutat"],
+"−03:00 −03:00":["America/Araguaina","America/Argentina/Buenos_Aires","America/Argentina/Catamarca","America/Argentina/Cordoba","America/Argentina/Jujuy","America/Argentina/La_Rioja","America/Argentina/Mendoza","America/Argentina/Rio_Gallegos","America/Argentina/Salta","America/Argentina/San_Juan","America/Argentina/San_Luis","America/Argentina/Tucuman","America/Argentina/Ushuaia","America/Bahia","America/Belem","America/Cayenne","America/Fortaleza","America/Maceio","America/Montevideo","America/Paramaribo","America/Punta_Arenas","America/Recife","America/Santarem","Antarctica/Palmer","Antarctica/Rothera","Atlantic/Stanley"],
+"−04:00 −03:00":["America/Asuncion","America/Campo_Grande","America/Cuiaba","America/Glace_Bay","America/Goose_Bay","America/Halifax","America/Moncton","America/Santiago","America/Thule","Atlantic/Bermuda"],
+"−05:00 −05:00":["America/Atikokan","America/Bogota","America/Cancun","America/Eirunepe","America/Guayaquil","America/Jamaica","America/Lima","America/Panama","America/Rio_Branco"],
+"−06:00 −05:00":["America/Bahia_Banderas","America/Chicago","America/Indiana/Knox","America/Indiana/Tell_City","America/Matamoros","America/Menominee","America/Merida","America/Mexico_City","America/Monterrey","America/North_Dakota/Beulah","America/North_Dakota/Center","America/North_Dakota/New_Salem","America/Rainy_River","America/Rankin_Inlet","America/Resolute","America/Winnipeg","Pacific/Easter"],
+"−04:00 −04:00":["America/Barbados","America/Blanc-Sablon","America/Boa_Vista","America/Caracas","America/Curacao","America/Guyana","America/La_Paz","America/Manaus","America/Martinique","America/Port_of_Spain","America/Porto_Velho","America/Puerto_Rico","America/Santo_Domingo"],
+"−06:00 −06:00":["America/Belize","America/Costa_Rica","America/El_Salvador","America/Guatemala","America/Managua","America/Regina","America/Swift_Current","America/Tegucigalpa","Pacific/Galapagos"],
+"−07:00 −06:00":["America/Boise","America/Cambridge_Bay","America/Chihuahua","America/Denver","America/Edmonton","America/Inuvik","America/Mazatlan","America/Ojinaga","America/Yellowknife"],
+"−07:00 −07:00":["America/Creston","America/Dawson_Creek","America/Fort_Nelson","America/Hermosillo","America/Phoenix"],
+"−08:00 −07:00":["America/Dawson","America/Los_Angeles","America/Tijuana","America/Vancouver","America/Whitehorse"],
+"−05:00 −04:00":["America/Detroit","America/Grand_Turk","America/Havana","America/Indiana/Indianapolis","America/Indiana/Marengo","America/Indiana/Petersburg","America/Indiana/Vevay","America/Indiana/Vincennes","America/Indiana/Winamac","America/Iqaluit","America/Kentucky/Louisville","America/Kentucky/Monticello","America/Nassau","America/New_York","America/Nipigon","America/Pangnirtung","America/Port-au-Prince","America/Thunder_Bay","America/Toronto"],
+"−03:00 −02:00":["America/Godthab","America/Miquelon","America/Sao_Paulo"],
+"−02:00 −02:00":["America/Noronha","Atlantic/South_Georgia"],
+"−01:00 +00:00":["America/Scoresbysund","Atlantic/Azores"],
+"−03:30 −02:30":["America/St_Johns"],
+"+11:00 +11:00":["Antarctica/Casey","Antarctica/Macquarie","Asia/Magadan","Asia/Sakhalin","Asia/Srednekolymsk","Pacific/Bougainville","Pacific/Efate","Pacific/Guadalcanal","Pacific/Kosrae","Pacific/Norfolk","Pacific/Noumea","Pacific/Pohnpei"],
+"+07:00 +07:00":["Antarctica/Davis","Asia/Bangkok","Asia/Barnaul","Asia/Ho_Chi_Minh","Asia/Hovd","Asia/Jakarta","Asia/Krasnoyarsk","Asia/Novokuznetsk","Asia/Novosibirsk","Asia/Pontianak","Asia/Tomsk","Indian/Christmas"],
+"+10:00 +10:00":["Antarctica/DumontDUrville","Asia/Ust-Nera","Asia/Vladivostok","Australia/Brisbane","Australia/Lindeman","Pacific/Chuuk","Pacific/Guam","Pacific/Port_Moresby"],
+"+05:00 +05:00":["Antarctica/Mawson","Asia/Aqtau","Asia/Aqtobe","Asia/Ashgabat","Asia/Atyrau","Asia/Dushanbe","Asia/Karachi","Asia/Oral","Asia/Qyzylorda","Asia/Samarkand","Asia/Tashkent","Asia/Yekaterinburg","Indian/Kerguelen","Indian/Maldives"],
+"+00:00 +02:00":["Antarctica/Troll"],
+"+06:00 +06:00":["Antarctica/Vostok","Asia/Almaty","Asia/Bishkek","Asia/Dhaka","Asia/Omsk","Asia/Thimphu","Asia/Urumqi","Indian/Chagos"],
+"+02:00 +03:00":["Asia/Amman","Asia/Beirut","Asia/Damascus","Asia/Gaza","Asia/Hebron","Asia/Jerusalem","Europe/Athens","Europe/Bucharest","Europe/Chisinau","Europe/Helsinki","Europe/Kiev","Asia/Nicosia","Europe/Riga","Europe/Sofia","Europe/Tallinn","Europe/Uzhgorod","Europe/Vilnius","Europe/Zaporozhye"],
+"+12:00 +12:00":["Asia/Anadyr","Asia/Kamchatka","Pacific/Funafuti","Pacific/Kwajalein","Pacific/Majuro","Pacific/Nauru","Pacific/Tarawa","Pacific/Wake","Pacific/Wallis"],
+"+04:00 +04:00":["Asia/Baku","Asia/Dubai","Asia/Tbilisi","Asia/Yerevan","Europe/Astrakhan","Europe/Samara","Europe/Saratov","Europe/Ulyanovsk","Europe/Volgograd","Indian/Mahe","Indian/Mauritius","Indian/Reunion"],
+"+08:00 +08:00":["Asia/Brunei","Asia/Choibalsan","Asia/Hong_Kong","Asia/Irkutsk","Asia/Kuala_Lumpur","Asia/Kuching","Asia/Macau","Asia/Makassar","Asia/Manila","Asia/Shanghai","Asia/Singapore","Asia/Taipei","Asia/Ulaanbaatar","Australia/Perth"],
+"+09:00 +09:00":["Asia/Chita","Asia/Dili","Asia/Jayapura","Asia/Khandyga","Asia/Pyongyang","Asia/Seoul","Asia/Tokyo","Asia/Yakutsk","Pacific/Palau"],
+"+05:30 +05:30":["Asia/Colombo","Asia/Kolkata"],
+"+04:30 +04:30":["Asia/Kabul"],
+"+05:45 +05:45":["Asia/Kathmandu"],
+"+03:30 +04:30":["Asia/Tehran"],
+"+06:30 +06:30":["Asia/Yangon","Indian/Cocos"],
+"−01:00 −01:00":["Atlantic/Cape_Verde"],
+"+09:30 +10:30":["Australia/Adelaide","Australia/Broken_Hill"],
+"+10:00 +11:00":["Australia/Currie","Australia/Hobart","Australia/Melbourne","Australia/Sydney"],
+"+09:30 +09:30":["Australia/Darwin"],
+"+08:45 +08:45":["Australia/Eucla"],
+"+10:30 +11:00":["Australia/Lord_Howe"],
+"+13:00 +14:00":["Pacific/Apia","Pacific/Tongatapu"],
+"+12:00 +13:00":["Pacific/Auckland","Pacific/Fiji"],
+"+12:45 +13:45":["Pacific/Chatham"],
+"+13:00 +13:00":["Pacific/Enderbury","Pacific/Fakaofo"],
+"−09:00 −09:00":["Pacific/Gambier"],
+"−10:00 −10:00":["Pacific/Honolulu","Pacific/Rarotonga","Pacific/Tahiti"],
+"+14:00 +14:00":["Pacific/Kiritimati"],
+"−09:30 −09:30":["Pacific/Marquesas"],
+"−11:00 −11:00":["Pacific/Niue","Pacific/Pago_Pago"],
+"−08:00 −08:00":["Pacific/Pitcairn"]}

public/tzdb/scrape-wikipedia.js

@@ -0,0 +1,31 @@
+// https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+
+var zones = [];
+var zoneMap = {};
+var all = document.body
+	.querySelector('.wikitable.sortable.jquery-tablesorter')
+	.querySelectorAll('tr');
+all = [].slice.call(all, 1); // remove header
+
+all.forEach(function(el) {
+	if (/Alias|Deprecated|Etc\//.test(el.outerText)) {
+		$(el).remove();
+		return;
+	}
+
+	var fields = [].slice.call(el.querySelectorAll('td'));
+	var f = fields.map(function(td) {
+		return td.innerText.trim();
+	});
+	var id = f[5] + ' ' + f[6];
+	if (!zoneMap[id]) {
+		zones.push([f[2], f[5], f[6]]);
+	}
+	zoneMap[id] = zoneMap[id] || [];
+	zoneMap[id].push(f[2]);
+});
+
+// console.log(JSON.stringify(zones));
+console.log('Total:', all.length);
+console.log('Unique:', Object.keys(zoneMap).length);
+console.log(zoneMap);

webhooks/webhooks.go

@@ -0,0 +1,161 @@
+package webooks
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+var logger chan string
+
+func init() {
+	logger = make(chan string, 10)
+	go func() {
+		for {
+			msg := <-logger
+			log.Println(msg)
+		}
+	}()
+}
+
+type Webhook struct {
+	ID      string            `json:"id,omitempty"`
+	Comment string            `json:"comment"`
+	Method  string            `json:"method"`
+	URL     string            `json:"url"`
+	TZ      string            `json:"-"`
+	Auth    map[string]string `json:"auth,omitempty"`
+	Headers map[string]string `json:"headers,omitempty"`
+	Form    map[string]string `json:"form,omitempty"`
+	JSON    map[string]string `json:"json,omitempty"`
+	Config  map[string]string `json:"config,omitempty"`
+}
+
+func Log(str string, args ...interface{}) {
+	logger <- fmt.Sprintf(str, args...)
+}
+
+func Run(h Webhook) {
+	// TODO do this in main on config init
+	if "" == h.Method {
+		h.Method = "POST"
+	}
+
+	var body *strings.Reader
+	var err error
+	// TODO real templates
+	loc, err := time.LoadLocation(h.TZ)
+	if nil != err {
+		Log("Bad timezone", h.TZ)
+		loc, _ = time.LoadLocation("UTC")
+	}
+	t := time.Now().In(loc)
+	z, _ := t.Zone()
+	if 0 != len(h.Form) {
+		form := url.Values{}
+		for k := range h.Form {
+			v := h.Form[k]
+			// because `{{` gets urlencoded
+			//v = strings.Replace(v, "{{ .Name }}", d.Name, -1)
+			v = strings.Replace(v, "{{ .Datetime }}", t.Format("2006-01-02 3:04:05 MST"), -1)
+			v = strings.Replace(v, "{{ .Date }}", t.Format("2006-01-02"), -1)
+			v = strings.Replace(v, "{{ .Time }}", t.Format(time.Kitchen), -1)
+			v = strings.Replace(v, "{{ .Zone }}", z, -1)
+			Log("[HEADER] %s: %s", k, v)
+			form.Set(k, v)
+		}
+		body = strings.NewReader(form.Encode())
+	} else if 0 != len(h.JSON) {
+		bodyBuf, err := json.Marshal(h.JSON)
+		if nil != err {
+			Log("[Notify] JSON Marshal Error for '%s': %s", h.Comment, err)
+			return
+		}
+		// `{{` is left alone in the body
+		bodyStr := string(bodyBuf)
+		bodyStr = strings.Replace(bodyStr, "{{ .Datetime }}", t.Format("2006-01-02 3:04:05 MST"), -1)
+		bodyStr = strings.Replace(bodyStr, "{{ .Date }}", t.Format("2006-01-02"), -1)
+		bodyStr = strings.Replace(bodyStr, "{{ .Time }}", t.Format("3:04:05PM"), -1)
+		bodyStr = strings.Replace(bodyStr, "{{ .Zone }}", z, -1)
+		body = strings.NewReader(bodyStr)
+		//body = strings.NewReader(string(bodyBuf))
+	}
+	if nil == body {
+		body = strings.NewReader("")
+	}
+
+	client := NewHTTPClient()
+	fmt.Println("bd?", h.Method, h.URL, body)
+	req, err := http.NewRequest(h.Method, h.URL, body)
+	if nil != err {
+		Log("[Notify] HTTP Client Network Error for '%s': %s", h.Comment, err)
+		return
+	}
+
+	if 0 != len(h.Form) {
+		req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	} else if 0 != len(h.JSON) {
+		req.Header.Set("Content-Type", "application/json")
+	}
+
+	if 0 != len(h.Auth) {
+		user := h.Auth["user"]
+		if "" == user {
+			user = h.Auth["username"]
+		}
+		pass := h.Auth["pass"]
+		if "" == user {
+			pass = h.Auth["password"]
+		}
+		req.SetBasicAuth(user, pass)
+	}
+
+	req.Header.Set("User-Agent", "Watchdog/1.0")
+	for k := range h.Headers {
+		req.Header.Set(k, h.Headers[k])
+	}
+
+	resp, err := client.Do(req)
+	if nil != err {
+		Log("[Notify] HTTP Client Error for '%s': %s", h.Comment, err)
+		return
+	}
+
+	if !(resp.StatusCode >= 200 && resp.StatusCode < 300) {
+		Log("[Notify] Response Error for '%s': %s", h.Comment, resp.Status)
+		return
+	}
+
+	// TODO json vs xml vs txt
+	var data map[string]interface{}
+	req.Header.Add("Accept", "application/json")
+	decoder := json.NewDecoder(resp.Body)
+	err = decoder.Decode(&data)
+	if err != nil {
+		Log("[Notify] Response Body Error for '%s': %s", h.Comment, resp.Status)
+		return
+	}
+
+	// TODO some sort of way to determine if data is successful (keywords)
+	Log("[Notify] Success? %#v", data)
+}
+
+// The default http client uses unsafe defaults
+func NewHTTPClient() *http.Client {
+	transport := &http.Transport{
+		Dial: (&net.Dialer{
+			Timeout: 10 * time.Second,
+		}).Dial,
+		TLSHandshakeTimeout: 5 * time.Second,
+	}
+	client := &http.Client{
+		Timeout:   time.Second * 5,
+		Transport: transport,
+	}
+	return client
+}