89 lines
2.0 KiB
Go
89 lines
2.0 KiB
Go
package main
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import (
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"database/sql"
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"errors"
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"log"
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"os"
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"path/filepath"
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"github.com/lopezator/migrator"
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)
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func (a *app) openDatabase() (err error) {
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if a.config.DBPath == "" {
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return errors.New("empty database path")
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}
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_ = os.MkdirAll(filepath.Dir(a.config.DBPath), 0644)
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a.database, err = sql.Open("sqlite3", a.config.DBPath+"?cache=shared&mode=rwc&_journal_mode=WAL&_busy_timeout=100")
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if err != nil {
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return err
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}
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a.shutdown.Add(func() {
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_ = a.database.Close()
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log.Println("Closed database")
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})
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a.migrateDatabase()
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return nil
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}
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func (a *app) migrateDatabase() {
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a.write.Lock()
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defer a.write.Unlock()
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m, err := migrator.New(
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migrator.Migrations(
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&migrator.Migration{
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Name: "00001",
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Func: func(tx *sql.Tx) error {
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_, err := tx.Exec(`
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drop table if exists gorp_migrations;
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create table if not exists redirect(slug text not null primary key, url text not null, type text not null default 'url', hits integer default 0 not null);
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insert or replace into redirect (slug, url) values ('source', 'https://git.jlel.se/jlelse/GoShort');
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`)
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return err
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},
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},
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),
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)
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if err != nil {
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log.Fatal(err.Error())
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return
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}
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if err := m.Migrate(a.database); err != nil {
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log.Fatal(err.Error())
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return
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}
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}
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const (
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typUrl = "url"
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typText = "text"
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)
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func (a *app) insertRedirect(slug string, url string, typ string) error {
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a.write.Lock()
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defer a.write.Unlock()
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_, err := a.database.Exec("INSERT INTO redirect (slug, url, type) VALUES (?, ?, ?)", slug, url, typ)
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return err
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}
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func (a *app) deleteSlug(slug string) error {
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a.write.Lock()
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defer a.write.Unlock()
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_, err := a.database.Exec("DELETE FROM redirect WHERE slug = ?", slug)
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return err
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}
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func (a *app) increaseHits(slug string) {
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go func() {
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a.write.Lock()
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defer a.write.Unlock()
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_, _ = a.database.Exec("UPDATE redirect SET hits = hits + 1 WHERE slug = ?", slug)
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}()
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}
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func (a *app) slugExists(slug string) (exists bool, err error) {
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err = a.database.QueryRow("SELECT EXISTS(SELECT 1 FROM redirect WHERE slug = ?)", slug).Scan(&exists)
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return
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}
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