package v1

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"github.com/gochat/gochat/internal/service"
	"github.com/gochat/gochat/pkg/response"
)

// DeliveryStatusHandler handles message delivery status endpoints.
// Reference: Chatwoot message delivery status per recipient tracking
// GET /api/v1/accounts/:account_id/conversations/:conversation_id/messages/:message_id/delivery_status
type DeliveryStatusHandler struct {
	svc *service.DeliveryStatusService
}

// NewDeliveryStatusHandler creates a new DeliveryStatusHandler.
func NewDeliveryStatusHandler(svc *service.DeliveryStatusService) *DeliveryStatusHandler {
	return &DeliveryStatusHandler{svc: svc}
}

// List retrieves all delivery statuses for a given message.
// GET /api/v1/accounts/:account_id/conversations/:conversation_id/messages/:message_id/delivery_status
func (h *DeliveryStatusHandler) List(c *gin.Context) {
	accountID, err := parseUintParam(c, "account_id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}

	conversationID, err := parseUintParam(c, "conversation_id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid conversation_id")
		return
	}

	messageID, err := parseUintParam(c, "message_id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid message_id")
		return
	}

	statuses, svcErr := h.svc.ListByMessage(c.Request.Context(), accountID, conversationID, messageID)
	if svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}

	response.OK(c, statuses)
}