package db

import "time"

type Log struct {
	ID        uint      `gorm:"primaryKey"`
	Level     string    `gorm:"size:10;not null"` // "info", "error", etc.
	Message   string    `gorm:"not null"`
	Service   string    `gorm:"size:50"`    // Optional: service name
	Metadata  JSONB     `gorm:"type:jsonb"` // Structured fields (e.g., {"user_id": 123})
	CreatedAt time.Time `gorm:"index"`      // Auto-set by GORM
	Checked   bool      `gorm:"type:boolean;default:false"`
}

// JSONB is a helper type for PostgreSQL JSONB fields.
type JSONB map[string]interface{}

// --- CRUD Operations ---

// CreateLog inserts a new log entry.
func CreateLog(level, message, service string, metadata JSONB) error {
	log := Log{
		Level:    level,
		Message:  message,
		Service:  service,
		Metadata: metadata,
	}
	return DB.Create(&log).Error
}

// GetLogsByLevel fetches logs filtered by severity.
func GetLogsByLevel(level string, limit int) ([]Log, error) {
	var logs []Log
	err := DB.Where("level = ?", level).Limit(limit).Find(&logs).Error
	return logs, err
}

// DeleteOldLogs removes logs older than `days`.
func DeleteOldLogs(days int) error {
	return DB.Where("created_at < ?", time.Now().AddDate(0, 0, -days)).Delete(&Log{}).Error
}