127 lines
3.0 KiB
Go
127 lines
3.0 KiB
Go
package main
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import (
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"log"
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"net/http"
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"database/sql"
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"context"
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_ "github.com/mattn/go-sqlite3"
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"stevenlr.com/timer/view"
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"stevenlr.com/timer/model"
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)
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func initializeDatabase(db *sql.DB) error {
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tx, err := db.Begin()
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if err != nil { return err }
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defer tx.Rollback()
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_, err = tx.Exec(`
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CREATE TABLE Timer (
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Id BLOB NOT NULL UNIQUE,
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Name TEXT NOT NULL,
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StartTime TEXT NOT NULL,
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EndTime TEXT NOT NULL,
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PRIMARY KEY (id)
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)
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`)
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if err != nil { return err }
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now := model.MakeTimeNow()
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id := model.MakeUUID()
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_, err = tx.Exec(`
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INSERT INTO Timer VALUES ($1, $2, $3, $4)`, id, "My timer", now, now);
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if err != nil { return err }
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id = model.MakeUUID()
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_, err = tx.Exec(`
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INSERT INTO Timer VALUES ($1, $2, $3, $4)`, id, "My timer 2", now, now);
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if err != nil { return err }
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return tx.Commit()
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}
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func queryAllTimers(db *sql.DB) []model.Timer {
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rows, err := db.Query("SELECT Id, Name FROM Timer")
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if err != nil { log.Fatalln(err) }
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timers := []model.Timer{}
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for rows.Next() {
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var t model.Timer
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if err := rows.Scan(&t.Id, &t.Name); err == nil {
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timers = append(timers, t)
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}
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}
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return timers
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}
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func queryTimer(db *sql.DB, idStr string) *model.Timer {
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var id model.UUID
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if err := id.Scan(idStr); err != nil { return nil }
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row := db.QueryRow("SELECT Id, Name, StartTime, EndTime FROM Timer WHERE Id=$1", id)
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var t model.Timer
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if err := row.Scan(&t.Id, &t.Name, &t.StartTime, &t.EndTime); err == nil {
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return &t
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}
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return nil
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}
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type myServer struct {
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db *sql.DB
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}
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func (server *myServer) handleNotFound(w http.ResponseWriter, _ *http.Request) {
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w.WriteHeader(http.StatusNotFound)
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view.Main(view.Error404()).Render(context.Background(), w)
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}
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func (server *myServer) handleMain(w http.ResponseWriter, r *http.Request) {
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if r.URL.Path == "/" {
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timers := queryAllTimers(server.db)
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view.Main(view.TimersList(timers)).Render(context.Background(), w)
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} else {
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server.handleNotFound(w, r)
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}
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}
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func (server *myServer) handleTimer(w http.ResponseWriter, r *http.Request) {
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timer := queryTimer(server.db, r.PathValue("timerId"))
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if timer != nil {
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view.Main(view.TimerView(*timer)).Render(context.Background(), w)
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} else {
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server.handleNotFound(w, r)
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}
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}
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func main() {
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log.Println("Starting...")
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db, err := sql.Open("sqlite3", ":memory:")
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if err != nil {
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log.Fatalln(err)
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}
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defer db.Close()
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if err := initializeDatabase(db); err != nil {
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log.Fatalln(err)
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}
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myServer := myServer{ db: db }
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fs := http.FileServer(http.Dir("static/"))
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http.Handle("/static/", http.StripPrefix("/static/", fs))
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http.HandleFunc("/timer/{timerId}", myServer.handleTimer)
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http.HandleFunc("/", myServer.handleMain)
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log.Println("Started!")
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http.ListenAndServe("0.0.0.0:80", nil)
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}
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