kevinschoon-pomo/store.go

153 lines
3.2 KiB
Go

package main
import (
"database/sql"
_ "github.com/mattn/go-sqlite3"
"os"
"strings"
"time"
)
// 2018-01-16 19:05:21.752851759+08:00
const datetimeFmt = "2006-01-02 15:04:05.999999999-07:00"
type Store struct {
db *sql.DB
}
func NewStore(path string) (*Store, error) {
os.Mkdir(path, 0755)
db, err := sql.Open("sqlite3", path+"/pomo.db")
if err != nil {
return nil, err
}
return &Store{db: db}, nil
}
func (s Store) CreateTask(task Task) (int, error) {
var taskID int
tx, err := s.db.Begin()
if err != nil {
return -1, err
}
_, err = tx.Exec(
"INSERT INTO task (message,pomodoros,duration,tags) VALUES ($1,$2,$3,$4)",
task.Message, task.NPomodoros, task.Duration.String(), strings.Join(task.Tags, ","))
if err != nil {
tx.Rollback()
return -1, err
}
err = tx.QueryRow("SELECT last_insert_rowid() FROM task").Scan(&taskID)
if err != nil {
tx.Rollback()
return -1, err
}
return taskID, tx.Commit()
}
func (s Store) CreatePomodoro(taskID int, pomodoro Pomodoro) error {
_, err := s.db.Exec(
`INSERT INTO pomodoro (task_id, start, end) VALUES ($1, $2, $3)`,
taskID,
pomodoro.Start,
pomodoro.End,
)
return err
}
func (s Store) ReadTasks() ([]*Task, error) {
rows, err := s.db.Query(`SELECT rowid,message,pomodoros,duration,tags FROM task`)
if err != nil {
return nil, err
}
tasks := []*Task{}
for rows.Next() {
var (
tags string
strDuration string
)
task := &Task{Pomodoros: []*Pomodoro{}}
err = rows.Scan(&task.ID, &task.Message, &task.NPomodoros, &strDuration, &tags)
if err != nil {
return nil, err
}
duration, _ := time.ParseDuration(strDuration)
task.Duration = duration
if tags != "" {
task.Tags = strings.Split(tags, ",")
}
pomodoros, err := s.ReadPomodoros(task.ID)
if err != nil {
return nil, err
}
for _, pomodoro := range pomodoros {
task.Pomodoros = append(task.Pomodoros, pomodoro)
}
tasks = append(tasks, task)
}
return tasks, nil
}
func (s Store) ReadPomodoros(taskID int) ([]*Pomodoro, error) {
rows, err := s.db.Query(`SELECT start,end FROM pomodoro WHERE task_id = $1`, &taskID)
if err != nil {
return nil, err
}
pomodoros := []*Pomodoro{}
for rows.Next() {
var (
startStr string
endStr string
)
pomodoro := &Pomodoro{}
err = rows.Scan(&startStr, &endStr)
if err != nil {
return nil, err
}
start, _ := time.Parse(datetimeFmt, startStr)
end, _ := time.Parse(datetimeFmt, endStr)
pomodoro.Start = start
pomodoro.End = end
pomodoros = append(pomodoros, pomodoro)
}
return pomodoros, nil
}
func (s Store) DeleteTask(taskID int) error {
tx, err := s.db.Begin()
if err != nil {
return err
}
_, err = tx.Exec("DELETE FROM task WHERE rowid = $1", &taskID)
if err != nil {
tx.Rollback()
return err
}
_, err = tx.Exec("DELETE FROM pomodoro WHERE task_id = $1", &taskID)
if err != nil {
tx.Rollback()
return err
}
return tx.Commit()
}
func (s Store) Close() error { return s.db.Close() }
func initDB(db *Store) error {
stmt := `
CREATE TABLE task (
message TEXT,
pomodoros INTEGER,
duration TEXT,
tags TEXT
);
CREATE TABLE pomodoro (
task_id INTEGER,
start DATETTIME,
end DATETTIME
);
`
_, err := db.db.Exec(stmt)
return err
}