package handlers

import (
	"gestion/db"
	"log"
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"
)

// GetCommandStatus - Statut temps réel d'une commande
func GetCommandStatus(c *gin.Context) {
	database := c.MustGet("database").(*db.Database)

	username, exists := c.Get("username")
	if !exists {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "Authentification requise"})
		return
	}

	usernameStr := username.(string)

	commandID, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "ID invalide"})
		return
	}

	command, err := database.GetCommandByID(commandID)
	if err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "Commande non trouvée"})
		return
	}

	cmdUsername, _ := command["username"].(string)
	if cmdUsername != usernameStr {
		log.Printf("❌ [STATUS] Accès refusé - cmd de %s demandée par %s", cmdUsername, usernameStr)
		c.JSON(http.StatusForbidden, gin.H{
			"error": "Cette commande ne vous appartient pas",
		})
		return
	}

	etaData, _ := database.GetCommandETA(commandID)

	livreurInfo := gin.H{
		"assigned": false,
	}
	if livreurAssign, ok := command["livreur_assign"].(string); ok && livreurAssign != "" {
		queueInfo, _ := database.GetDeliverymanQueueInfo(livreurAssign)
		livreurInfo = gin.H{
			"assigned":       true,
			"livreur_name":   livreurAssign,
			"queue_position": queueInfo["queue_size"],
		}
	}

	statusMessage := getStatusMessage(command["status"].(string))

	c.JSON(http.StatusOK, gin.H{
		"success":        true,
		"command_id":     commandID,
		"status":         command["status"],
		"status_message": statusMessage,
		"adresse":        command["adresse"],
		"total_prix":     command["total_prix"],
		"created_at":     command["created_at"],
		"livreur":        livreurInfo,
		"eta":            etaData,
	})
}

// GetMyCommandsWithTracking - Liste des commandes avec suivi
func GetMyCommandsWithTracking(c *gin.Context) {
	database := c.MustGet("database").(*db.Database)

	username, exists := c.Get("username")
	if !exists {
		c.JSON(http.StatusUnauthorized, gin.H{"error": "Authentification requise"})
		return
	}

	usernameStr := username.(string)
	status := c.Query("status")

	log.Printf("📋 [MY_CMDS] Client %s demande ses commandes (status=%s)", usernameStr, status)

	commands, err := database.GetAllCommands(status, usernameStr)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{
			"error":   "Erreur récupération",
			"details": err.Error(),
		})
		return
	}

	// Enrichir avec tracking
	enrichedCommands := make([]gin.H, len(commands))
	for i, cmd := range commands {
		commandID, _ := cmd["id"].(int)

		// ETA
		etaData, _ := database.GetCommandETA(commandID)

		// Infos livreur
		livreurInfo := gin.H{
			"assigned": false,
		}
		if livreurAssign, ok := cmd["livreur_assign"].(string); ok && livreurAssign != "" {
			queueInfo, _ := database.GetDeliverymanQueueInfo(livreurAssign)
			livreurInfo = gin.H{
				"assigned":       true,
				"livreur_name":   livreurAssign,
				"queue_position": queueInfo["queue_size"],
			}
		}

		enrichedCommands[i] = gin.H{
			"id":                      cmd["id"],
			"status":                  cmd["status"],
			"status_message":          getStatusMessage(cmd["status"].(string)),
			"adresse":                 cmd["adresse"],
			"total_prix":              cmd["total_prix"],
			"created_at":              cmd["created_at"],
			"livreur":                 livreurInfo,
			"eta":                     etaData,
			"proposed_address":        cmd["proposed_address"],
			"address_proposal_status": cmd["address_proposal_status"],
		}
	}

	c.JSON(http.StatusOK, gin.H{
		"success":  true,
		"commands": enrichedCommands,
		"count":    len(enrichedCommands),
	})
}

// GetCommandTracking - Suivi détaillé d'une commande
func GetCommandTracking(c *gin.Context) {
	database := c.MustGet("database").(*db.Database)

	username := c.GetString("username")
	commandID, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": "ID invalide"})
		return
	}

	// Récupérer commande
	command, err := database.GetCommandByID(commandID)
	if err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "Commande non trouvée"})
		return
	}

	// Vérifier propriété
	cmdUsername, _ := command["username"].(string)
	if cmdUsername != username {
		c.JSON(http.StatusForbidden, gin.H{
			"error": "Cette commande ne vous appartient pas",
		})
		return
	}

	logs, _ := database.GetCommandLogs(commandID)

	etaData, _ := database.GetCommandETA(commandID)

	timeline := buildTimeline(logs)

	c.JSON(http.StatusOK, gin.H{
		"success":        true,
		"command_id":     commandID,
		"status":         command["status"],
		"status_message": getStatusMessage(command["status"].(string)),
		"eta":            etaData,
		"timeline":       timeline,
		"logs":           logs,
	})
}

func getStatusMessage(status string) string {
	messages := map[string]string{
		"pending":   "⏳ En attente d'assignation",
		"assigned":  "✅ Livreur assigné",
		"en_route":  "🚗 En cours de livraison",
		"arrived":   "📍 Livreur arrivé",
		"livre":     "📦 Livré - En attente de confirmation",
		"delivered": "✅ Livré",
		"approved":  "🎉 Livraison confirmée",
		"cancelled": "🚫 Annulée",
		"disabled":  "⚠️ Désactivée",
	}

	if msg, ok := messages[status]; ok {
		return msg
	}
	return "📋 " + status
}

// buildTimeline construit une timeline depuis les logs
func buildTimeline(logs []map[string]any) []gin.H {
	timeline := make([]gin.H, 0)

	for _, logEntry := range logs {
		status, _ := logEntry["status"].(string)
		message, _ := logEntry["message"].(string)
		createdAt, _ := logEntry["created_at"]

		timeline = append(timeline, gin.H{
			"status":     status,
			"message":    message,
			"icon":       getStatusIcon(status),
			"created_at": createdAt,
		})
	}

	return timeline
}

// getStatusIcon retourne une icône pour la timeline
func getStatusIcon(status string) string {
	icons := map[string]string{
		"created":   "🛒",
		"assigned":  "👤",
		"en_route":  "🚗",
		"arrived":   "📍",
		"livre":     "✅",
		"approved":  "🎉",
		"cancelled": "🚫",
	}

	if icon, ok := icons[status]; ok {
		return icon
	}
	return "📋"
}