82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
package main
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import (
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"errors"
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"time"
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)
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const (
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forceRejectionVote = -1
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nuclearOptionVote = 10
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)
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var errForceRejectionVoteReuse = errors.New("db: the user has used force rejection vote in the last month")
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var errVoteIsOver = errors.New("db: the vote cannot be changed once it's over")
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func createCustomVote(messageID, text string) (int, error) {
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result, err := db.Exec("INSERT INTO vote(messageId, name, type, finished) VALUES(?, ?, ?, ?)", messageID, text, "custom", false)
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if err != nil {
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return 0, err
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}
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lastID, err := result.LastInsertId()
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return int(lastID), nil
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}
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func getVoteName(id int) (string, error) {
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rows, err := db.Query("SELECT name FROM vote WHERE id=?", id)
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if err != nil {
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return "", err
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}
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defer rows.Close()
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if rows.Next() {
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var name string
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err := rows.Scan(&name)
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if err != nil {
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return "", err
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}
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return name, nil
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}
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return "", errNotFound
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}
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func getVoteFromMessageID(msgID string) (int, error) {
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rows, err := db.Query("SELECT id FROM vote WHERE messageId=?", msgID)
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if err != nil {
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return 0, err
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}
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defer rows.Close()
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if rows.Next() {
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var id int
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err := rows.Scan(&id)
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if err != nil {
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return 0, err
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}
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return id, nil
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}
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return 0, errNotFound
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}
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func updateVote(voteID int, userID string, voteValue int) error {
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if voteValue == forceRejectionVote {
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//Check if they used it within a month.
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rows, err := db.Query("SELECT voteId FROM choices WHERE date >= ? AND value=?", time.Now().AddDate(0, -1, 0))
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if err != nil {
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return err
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}
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if rows.Next() {
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return errForceRejectionVoteReuse
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}
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rows.Close()
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}
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//Check if the vote is finished and don't allow change of vote that way.
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rows, err := db.Query("SELECT finished FROM vote WHERE id=? AND finished=?", voteID, true)
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defer rows.Close()
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if rows.Next() {
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return errVoteIsOver
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}
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_, err = db.Exec("REPLACE INTO choices (voteId, userId, date, value) VALUES (?, ?, ?, ?)", voteID, userID, time.Now(), voteValue)
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return err
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}
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