mirror of
https://github.com/ChronosX88/yans.git
synced 2024-09-19 19:11:26 +00:00
96 lines
2.7 KiB
Go
96 lines
2.7 KiB
Go
package sqlite
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import (
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"database/sql"
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"embed"
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"github.com/ChronosX88/yans/internal/config"
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"github.com/ChronosX88/yans/internal/models"
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"github.com/ChronosX88/yans/internal/utils"
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"github.com/dlclark/regexp2"
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"github.com/jmoiron/sqlx"
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"github.com/mattn/go-sqlite3"
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_ "github.com/mattn/go-sqlite3"
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"github.com/pressly/goose/v3"
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)
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//go:embed migrations/*.sql
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var migrations embed.FS
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type SQLiteBackend struct {
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db *sqlx.DB
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}
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func regexHelper(re, s string) (bool, error) {
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return regexp2.MustCompile(re, regexp2.None).MatchString(s)
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}
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func NewSQLiteBackend(cfg config.SQLiteBackendConfig) (*SQLiteBackend, error) {
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sql.Register("sqlite3_with_regexp",
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&sqlite3.SQLiteDriver{
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ConnectHook: func(conn *sqlite3.SQLiteConn) error {
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return conn.RegisterFunc("regexp", regexHelper, true)
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},
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})
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db, err := sqlx.Open("sqlite3_with_regexp", cfg.Path)
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if err != nil {
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return nil, err
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}
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goose.SetBaseFS(migrations)
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if err := goose.SetDialect("sqlite3"); err != nil {
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return nil, err
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}
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if err := goose.Up(db.DB, "migrations"); err != nil {
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return nil, err
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}
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return &SQLiteBackend{
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db: db,
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}, nil
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}
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func (sb *SQLiteBackend) ListGroups() ([]models.Group, error) {
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var groups []models.Group
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return groups, sb.db.Select(&groups, "SELECT * FROM groups")
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}
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func (sb *SQLiteBackend) ListGroupsByPattern(pattern string) ([]models.Group, error) {
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var groups []models.Group
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w, err := utils.ParseWildmat(pattern)
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if err != nil {
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return nil, err
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}
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r, err := w.ToRegex()
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if err != nil {
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return nil, err
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}
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return groups, sb.db.Select(&groups, "SELECT * FROM groups WHERE group_name REGEXP ?", r.String())
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}
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func (sb *SQLiteBackend) GetArticlesCount(g models.Group) (int, error) {
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var count int
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return count, sb.db.Get(&count, "SELECT COUNT(*) FROM articles_to_groups WHERE group_id = ?", g.ID)
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}
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func (sb *SQLiteBackend) GetGroupHighWaterMark(g models.Group) (int, error) {
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var waterMark int
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return waterMark, sb.db.Get(&waterMark, "SELECT article_id FROM articles_to_groups WHERE group_id = ? ORDER BY article_id DESC LIMIT 1", g.ID)
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}
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func (sb *SQLiteBackend) GetGroupLowWaterMark(g models.Group) (int, error) {
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var waterMark int
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return waterMark, sb.db.Get(&waterMark, "SELECT article_id FROM articles_to_groups WHERE group_id = ? ORDER BY article_id LIMIT 1", g.ID)
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}
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func (sb *SQLiteBackend) GetGroup(groupName string) (models.Group, error) {
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var group models.Group
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return group, sb.db.Get(&group, "SELECT * FROM groups WHERE group_name = ?", groupName)
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}
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func (sb *SQLiteBackend) GetNewGroupsSince(timestamp int64) ([]models.Group, error) {
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var groups []models.Group
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return groups, sb.db.Select(&groups, "SELECT * FROM groups WHERE created_at > ?", timestamp)
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}
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