feat: add CSV export for approved orders && add non-delivery reason modal for livreurs

backend/gestion/handlers/commands.go

@@ -1,6 +1,8 @@
 package handlers
 
 import (
+	"bytes"
+	"encoding/csv"
 	"fmt"
 	"gestion/db"
 	"gestion/utils"
@@ -259,6 +261,47 @@ func RespondToAddressProposal(c *gin.Context) {
 	})
 }
 
+func ExportApprovedCommandsCSV(c *gin.Context) {
+	database := c.MustGet("database").(*db.Database)
+
+	commands, err := database.GetApprovedCommands()
+	if err != nil {
+		log.Printf("❌ [EXPORT_CSV] Erreur: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Erreur export CSV"})
+		return
+	}
+
+	var buf bytes.Buffer
+	w := csv.NewWriter(&buf)
+
+	_ = w.Write([]string{
+		"ID", "Client Order ID", "User ID", "Username",
+		"Statut", "Total (€)", "Adresse", "Livreur",
+		"Créé le", "Mis à jour le",
+	})
+
+	for _, cmd := range commands {
+		_ = w.Write([]string{
+			strconv.Itoa(cmd.ID),
+			strconv.Itoa(cmd.ClientOrderID),
+			strconv.Itoa(cmd.UserID),
+			cmd.Username,
+			cmd.Status,
+			strconv.FormatFloat(cmd.Total, 'f', 2, 64),
+			cmd.DeliveryAddress,
+			cmd.LivreurAssign,
+			cmd.CreatedAt.Format("2006-01-02 15:04:05"),
+			cmd.UpdatedAt.Format("2006-01-02 15:04:05"),
+		})
+	}
+	w.Flush()
+
+	filename := fmt.Sprintf("commandes_approved_%s.csv", time.Now().Format("2006-01-02"))
+	c.Header("Content-Type", "text/csv; charset=utf-8")
+	c.Header("Content-Disposition", "attachment; filename="+filename)
+	c.String(http.StatusOK, buf.String())
+}
+
 func GetAllCommands(c *gin.Context) {
 	database := c.MustGet("database").(*db.Database)