/*
Copyright 2025-2026 linux.do
Modified by Arctel.net, 2026

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package db

import (
	"context"
	"errors"
	"fmt"
	"strings"
	"time"

	"github.com/Rain-kl/Wavelet/internal/logger"
	"gorm.io/gorm"
	gormLogger "gorm.io/gorm/logger"
)

type gormZapLogger struct {
	logLevel                  gormLogger.LogLevel
	ignoreRecordNotFoundError bool
	slowThreshold             time.Duration
}

func (l *gormZapLogger) LogMode(level gormLogger.LogLevel) gormLogger.Interface {
	clone := *l
	clone.logLevel = level
	return &clone
}

func (l *gormZapLogger) Info(ctx context.Context, fmt string, args ...interface{}) {
	if l.logLevel >= gormLogger.Info {
		logger.InfoF(ctx, fmt, args...)
	}
}

func (l *gormZapLogger) Warn(ctx context.Context, fmt string, args ...interface{}) {
	if l.logLevel >= gormLogger.Warn {
		logger.WarnF(ctx, fmt, args...)
	}
}

func (l *gormZapLogger) Error(ctx context.Context, fmt string, args ...interface{}) {
	if l.logLevel >= gormLogger.Error {
		logger.ErrorF(ctx, fmt, args...)
	}
}

func (l *gormZapLogger) Trace(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
	elapsed := time.Since(begin)
	switch {
	case err != nil && l.logLevel >= gormLogger.Error && (!errors.Is(err, gorm.ErrRecordNotFound) || !l.ignoreRecordNotFoundError):
		sql, rows := fc()
		if rows == -1 {
			logger.ErrorF(ctx, "%s\n[%.3fms] [rows:%v] %s", err, float64(elapsed.Nanoseconds())/1e6, "-", sql)
		} else {
			logger.ErrorF(ctx, "%s\n[%.3fms] [rows:%v] %s", err, float64(elapsed.Nanoseconds())/1e6, rows, sql)
		}
	case elapsed > l.slowThreshold && l.slowThreshold != 0 && l.logLevel >= gormLogger.Warn:
		sql, rows := fc()
		slowLog := fmt.Sprintf("SLOW SQL >= %v", l.slowThreshold)
		if rows == -1 {
			logger.WarnF(ctx, "%s\n[%.3fms] [rows:%v] %s", slowLog, float64(elapsed.Nanoseconds())/1e6, "-", sql)
		} else {
			logger.WarnF(ctx, "%s\n[%.3fms] [rows:%v] %s", slowLog, float64(elapsed.Nanoseconds())/1e6, rows, sql)
		}
	case l.logLevel == gormLogger.Info:
		sql, rows := fc()
		if rows == -1 {
			logger.InfoF(ctx, "[%.3fms] [rows:%v] %s", float64(elapsed.Nanoseconds())/1e6, "-", sql)
		} else {
			logger.InfoF(ctx, "[%.3fms] [rows:%v] %s", float64(elapsed.Nanoseconds())/1e6, rows, sql)
		}
	}
}

func parseLogLevel(level string) gormLogger.LogLevel {
	level = strings.ToLower(level)
	switch level {
	case "silent":
		return gormLogger.Silent
	case "error":
		return gormLogger.Error
	case "warn":
		return gormLogger.Warn
	case "info":
		return gormLogger.Info
	default:
		return gormLogger.Info
	}
}