package gaypoints

import (
	"database/sql"
	_ "github.com/mattn/go-sqlite3"
	"github.com/rs/zerolog/log"
)

var gpSelectUser *sql.Stmt

var gpSelectChat *sql.Stmt

var gpSet *sql.Stmt

func sqlGetAllGP(chatid int64) (gaypoints []gaypointShortDetails) {
	rows, err := gpSelectChat.Query(chatid)
	if err != nil {
		log.Error().Err(err).Msg("failed to execute SQL to get get gaypoints for chat")
		return
	}

	var c int64
	var b int64
	for rows.Next() {
		switch err := rows.Scan(&c, &b); err {
		case nil:
			gaypoints = append(gaypoints, gaypointShortDetails{
				userID:    c,
				gaypoints: b,
			})
		default:
			log.Error().Err(err).Msg("failed to parse SQL to get get gaypoints for chat")
			return

		}
		log.Debug().Msg("executed SQL to get gaypoints for chat")
	}

	return gaypoints

}

func sqlGetGP(chatid int64, userid int64) (gaypoints int64) {
	row := gpSelectUser.QueryRow(chatid, userid)

	switch err := row.Scan(&gaypoints); err {
	case sql.ErrNoRows:
		gaypoints = -1
	case nil:
		break
	default:
		log.Error().Err(err).Msg("failed to execute SQL to get get gaypoints for user")
		return

	}
	log.Debug().Msg("executed SQL to get gaypoints for user")
	return gaypoints
}

func sqlSetGP(chatid int64, userid int64, gaypoints int64) {
	_, err := gpSet.Exec(chatid, userid, gaypoints)
	if err != nil {
		log.Error().Err(err).Msg("failed to execute SQL to get set gaypoints for user")
		return
	}
	log.Debug().Msg("executed SQL to set gaypoints for user")
}

func InitDB() {
	const dbPath string = "./bloater.db"
	log.Info().Str("dbpath", dbPath).Msg("init database")
	db, err := sql.Open("sqlite3", dbPath)
	if err != nil {
		log.Panic().Err(err).Msg("failed to open sqlite database")
	}

	_, err = db.Exec("CREATE TABLE IF NOT EXISTS gaypoints (chatid bigint, userid bigint,gaypoints bigint,UNIQUE(chatid,userid))")
	if err != nil {
		log.Panic().Err(err).Msg("failed to create table")
	}

	gpSelectUser, err = db.Prepare("SELECT gaypoints FROM gaypoints WHERE chatid = ? AND userid = ?")

	if err != nil {
		log.Panic().Err(err).Msg("failed to create sql statement")
	}

	gpSelectChat, err = db.Prepare("SELECT userid,gaypoints FROM gaypoints WHERE chatid = ? ORDER BY gaypoints DESC")

	if err != nil {
		log.Panic().Err(err).Msg("failed to create sql statement")
	}

	gpSet, err = db.Prepare("INSERT OR REPLACE INTO gaypoints (chatid, userid, gaypoints) values (?,?,?)")

	if err != nil {
		log.Panic().Err(err).Msg("failed to create sql statement")
	}

	log.Info().Msg("init database: done")
}