64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
package main
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import (
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"database/sql"
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"math"
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"sync"
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"time"
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"github.com/bwmarrin/discordgo"
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_ "github.com/mattn/go-sqlite3"
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)
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var db *sql.DB
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var lastMessage = make(map[string]time.Time)
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var incrementMutex = sync.Mutex{}
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func init() {
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var err error
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db, err = sql.Open("sqlite3", "./bot.db")
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if err != nil {
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panic(err)
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}
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db.SetMaxOpenConns(1)
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db.Exec("CREATE TABLE xp(id STRING NOT NULL UNIQUE, xp INTEGER NOT NULL)")
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}
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func incrementXP(dg *discordgo.Session, discordID string) {
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amountToIncrement := calculateIncrement(discordID)
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tx, err := db.Begin()
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if err != nil {
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logError(dg, "incrementXP", "begin", discordID, err)
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return
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}
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_, err = tx.Exec("INSERT INTO xp(id, xp) VALUES(?, ?) ON CONFLICT(id) DO UPDATE SET xp = xp+?;", discordID, amountToIncrement)
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if err != nil {
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logError(dg, "incrementXP", "insert", discordID, err)
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tx.Rollback()
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return
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}
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err = tx.Commit()
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if err != nil {
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logError(dg, "incrementXP", "commit", discordID, err)
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return
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}
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}
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func calculateIncrement(discordID string) int {
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incrementMutex.Lock()
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defer incrementMutex.Unlock()
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now := time.Now()
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delta := now.Sub(lastMessage[discordID])
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lastMessage[discordID] = now
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if delta.Seconds() < 0 {
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return 0
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}
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//Constructed on Desmos:
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//y=\frac{100}{\left(1+e^{-\left(\frac{x-15}{3}\right)}\right)}
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return int(100 / (1 + math.Pow(math.E, -((delta.Seconds()-15)/3))))
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}
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