package v1

import (
	"net/http"

	"github.com/gin-gonic/gin"

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

// ReportingEventHandler handles reporting event API endpoints.
// Reference: Chatwoot app/controllers/api/v1/accounts/reporting_events_controller.rb
type ReportingEventHandler struct {
	svc *service.ReportingEventService
}

// NewReportingEventHandler creates a new ReportingEventHandler.
func NewReportingEventHandler(svc *service.ReportingEventService) *ReportingEventHandler {
	return &ReportingEventHandler{svc: svc}
}

// List retrieves reporting events for an account with optional date range filtering.
// GET /api/v1/accounts/:account_id/reporting_events?since=2024-01-01T00:00:00Z&until=2024-12-31T23:59:59Z&metric=message_created
func (h *ReportingEventHandler) List(c *gin.Context) {
	accountID, err := parseUintParam(c, "account_id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}

	since, until, ok := parseDateRange(c)
	if !ok {
		return
	}

	// Check for optional metric filter
	metric := c.Query("metric")

	if metric != "" {
		events, svcErr := h.svc.GetByMetric(c.Request.Context(), accountID, metric, since, until)
		if svcErr != nil {
			handleServiceError(c, svcErr)
			return
		}
		response.OK(c, gin.H{"reporting_events": events})
		return
	}

	events, svcErr := h.svc.ListByAccount(c.Request.Context(), accountID, since, until)
	if svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}

	response.OK(c, gin.H{"reporting_events": events})
}