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package mysql
import (
"database/sql"
"fmt"
"github.com/silvasur/mailremind/model"
"github.com/silvasur/mailremind/schedule"
"log"
"time"
)
type Job struct {
con *MySQLDBCon
id DBID
user DBID
subject string
content []byte
next time.Time
sched schedule.MultiSchedule
}
func jobFromSQL(con *MySQLDBCon, s scanner) (*Job, error) {
var _id, _user uint64
var subject string
var content []byte
var _next int64
var _msched string
if err := s.Scan(&_id, &_user, &subject, &content, &_next, &_msched); err != nil {
return nil, err
}
sched, err := schedule.ParseMultiSchedule(_msched)
if err != nil {
return nil, err
}
return &Job{
con: con,
id: DBID(_id),
user: DBID(_user),
subject: subject,
content: content,
next: time.Unix(_next, 0),
sched: sched,
}, nil
}
func (u *User) CountJobs() (c int) {
row := u.con.stmt[qCountJobs].QueryRow(uint64(u.id))
if err := row.Scan(&c); err != nil {
log.Printf("Failed counting user's (%d) jobs: %s", u.id, err)
c = 0
}
return
}
func (u *User) Jobs() []model.Job {
rows, err := u.con.stmt[qJobsOfUser].Query(uint64(u.id))
if err != nil {
log.Printf("Failed getting jobs of user %d: %s", u.id, err)
return nil
}
jobs := make([]model.Job, 0)
for rows.Next() {
job, err := jobFromSQL(u.con, rows)
if err != nil {
log.Printf("Failed getting all jobs of user %d: %s", u.id, err)
break
}
jobs = append(jobs, job)
}
return jobs
}
func (u *User) JobByID(_id model.DBID) (model.Job, error) {
id := _id.(DBID)
row := u.con.stmt[qJobFromUserAndID].QueryRow(uint64(u.id), uint64(id))
switch job, err := jobFromSQL(u.con, row); err {
case nil:
return job, nil
case sql.ErrNoRows:
return nil, model.NotFound
default:
return nil, err
}
}
func (u *User) AddJob(subject string, content []byte, sched schedule.MultiSchedule, next time.Time) (model.Job, error) {
tx, err := u.con.con.Begin()
if err != nil {
return nil, err
}
insjob := tx.Stmt(u.con.stmt[qInsertJob])
res, err := insjob.Exec(uint64(u.id), subject, content, next.Unix(), sched.String())
if err != nil {
tx.Rollback()
return nil, err
}
_id, err := res.LastInsertId()
if err != nil {
tx.Rollback()
return nil, err
}
if err := tx.Commit(); err != nil {
return nil, err
}
return &Job{
con: u.con,
id: DBID(_id),
user: u.id,
subject: subject,
content: content,
next: next,
sched: sched,
}, nil
}
func (j *Job) ID() model.DBID { return j.id }
func (j *Job) Subject() string { return j.subject }
func (j *Job) Content() []byte { return j.content }
func (j *Job) Schedule() schedule.MultiSchedule { return j.sched }
func (j *Job) Next() time.Time { return j.next }
func (j *Job) User() model.User {
u, err := j.con.UserByID(j.user)
if err != nil {
// We panic here, since the user must exist, if the job is there.
// Since http handlers and the job handler do recover from panics, this should be okay.
panic(fmt.Errorf("Could not get user (%d) of Job %d: %s", j.user, j.id, err))
}
return u
}
func (j *Job) SetSubject(sub string) error {
if _, err := j.con.stmt[qSetSubject].Exec(sub, uint64(j.id)); err != nil {
return err
}
j.subject = sub
return nil
}
func (j *Job) SetContent(cont []byte) error {
if _, err := j.con.stmt[qSetContent].Exec(cont, uint64(j.id)); err != nil {
return err
}
j.content = cont
return nil
}
func (j *Job) SetSchedule(sched schedule.MultiSchedule) error {
if _, err := j.con.stmt[qSetSchedule].Exec(sched.String(), uint64(j.id)); err != nil {
return err
}
j.sched = sched
return nil
}
func (j *Job) SetNext(next time.Time) error {
if _, err := j.con.stmt[qSetNext].Exec(next.Unix(), uint64(j.id)); err != nil {
return err
}
j.next = next
return nil
}
func (j *Job) Delete() error {
_, err := j.con.stmt[qDelJob].Exec(j.id)
return err
}
func (con *MySQLDBCon) JobsBefore(t time.Time) (jobs []model.Job) {
rows, err := con.stmt[qJobsBefore].Query(t.Unix())
if err != nil {
log.Fatalf("Could not get jobs before %s: %s", t, err)
}
for rows.Next() {
job, err := jobFromSQL(con, rows)
if err != nil {
log.Fatalf("Could not get all jobs before %s: %s", t, err)
break
}
jobs = append(jobs, job)
}
return
}
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