package db

import (
	"time"
)

type LivreurRating struct {
	ID              int       `json:"id"`
	OrderID         int       `json:"order_id"`
	LivreurUsername string    `json:"livreur_username"`
	ClientUsername  string    `json:"client_username"`
	Rating          int       `json:"rating"`
	Comment         string    `json:"comment"`
	CreatedAt       time.Time `json:"created_at"`
}

func (d *Database) SubmitLivreurRating(orderID int, livreurUsername, clientUsername string, rating int, comment string) error {
	return d.GDB.Exec(`
		INSERT INTO livreur_ratings (order_id, livreur_username, client_username, rating, comment, created_at)
		VALUES (?, ?, ?, ?, ?, NOW())
	`, orderID, livreurUsername, clientUsername, rating, comment).Error
}

func (d *Database) GetOrderRating(orderID int) (*LivreurRating, error) {
	var r LivreurRating
	err := d.GDB.Raw(`SELECT * FROM livreur_ratings WHERE order_id = ? LIMIT 1`, orderID).Scan(&r).Error
	if err != nil {
		return nil, err
	}
	if r.ID == 0 {
		return nil, nil
	}
	return &r, nil
}

func (d *Database) GetLivreurRatings(livreurUsername string) ([]LivreurRating, float64, error) {
	var ratings []LivreurRating
	if err := d.GDB.Raw(`
		SELECT * FROM livreur_ratings WHERE livreur_username = ? ORDER BY created_at DESC LIMIT 200
	`, livreurUsername).Scan(&ratings).Error; err != nil {
		return nil, 0, err
	}

	var avg float64
	if len(ratings) > 0 {
		d.GDB.Raw(`SELECT COALESCE(AVG(rating), 0) FROM livreur_ratings WHERE livreur_username = ?`, livreurUsername).Scan(&avg)
	}
	return ratings, avg, nil
}

// GetOrderForRating retourne l'username client et le livreur d'une commande approuvée
func (d *Database) GetOrderForRating(orderID int) (clientUsername, livreurUsername string, err error) {
	var row struct {
		Username      string `gorm:"column:username"`
		LivreurAssign string `gorm:"column:livreur_assign"`
	}
	err = d.GDB.Raw(`
		SELECT username, COALESCE(livreur_assign, '') as livreur_assign
		FROM commandes WHERE id = ? AND status = 'approved' LIMIT 1
	`, orderID).Scan(&row).Error
	return row.Username, row.LivreurAssign, err
}