package handler

import (
	"bugulma/backend/internal/service"
	"net/http"

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

// AnalyticsHandler handles platform analytics and statistics
type AnalyticsHandler struct {
	service *service.AnalyticsService
}

// NewAnalyticsHandler creates a new analytics handler
func NewAnalyticsHandler(service *service.AnalyticsService) *AnalyticsHandler {
	return &AnalyticsHandler{service: service}
}

// GetPlatformStatistics returns overall platform statistics
// @Summary Get platform statistics
// @Tags analytics
// @Produce json
// @Success 200 {object} service.PlatformStatistics
// @Router /api/analytics/platform-stats [get]
func (h *AnalyticsHandler) GetPlatformStatistics(c *gin.Context) {
	stats, err := h.service.GetPlatformStatistics(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, stats)
}

// GetOrganizationStatistics returns statistics for a specific organization
// @Summary Get organization statistics
// @Tags analytics
// @Produce json
// @Param organizationId path string true "Organization ID"
// @Success 200 {object} service.OrganizationStatistics
// @Router /api/analytics/organizations/{organizationId}/stats [get]
func (h *AnalyticsHandler) GetOrganizationStatistics(c *gin.Context) {
	orgID := c.Param("organizationId")

	stats, err := h.service.GetOrganizationStatistics(c.Request.Context(), orgID)
	if err != nil {
		c.JSON(http.StatusNotFound, gin.H{"error": "Organization not found"})
		return
	}

	c.JSON(http.StatusOK, stats)
}

// GetMatchingStatistics returns matching engine performance statistics
// @Summary Get matching statistics
// @Tags analytics
// @Produce json
// @Success 200 {object} service.MatchingStatistics
// @Router /api/analytics/matching-stats [get]
func (h *AnalyticsHandler) GetMatchingStatistics(c *gin.Context) {
	stats, err := h.service.GetMatchingStatistics(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, stats)
}

// GetResourceFlowStatistics returns resource flow statistics
// @Summary Get resource flow statistics
// @Tags analytics
// @Produce json
// @Success 200 {object} service.ResourceFlowStatistics
// @Router /api/analytics/resource-flow-stats [get]
func (h *AnalyticsHandler) GetResourceFlowStatistics(c *gin.Context) {
	stats, err := h.service.GetResourceFlowStatistics(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, stats)
}

// GetImpactMetrics returns environmental and economic impact metrics
// @Summary Get impact metrics
// @Tags analytics
// @Produce json
// @Success 200 {object} service.ImpactMetrics
// @Router /api/analytics/impact-metrics [get]
func (h *AnalyticsHandler) GetImpactMetrics(c *gin.Context) {
	metrics, err := h.service.GetImpactMetrics(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, metrics)
}

// GetDashboardStatistics returns dashboard statistics
// @Summary Get dashboard statistics
// @Tags analytics
// @Produce json
// @Success 200 {object} service.DashboardStatistics
// @Router /api/analytics/dashboard [get]
func (h *AnalyticsHandler) GetDashboardStatistics(c *gin.Context) {
	stats, err := h.service.GetDashboardStatistics(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, stats)
}

// GetConnectionStatistics returns connection statistics
// @Summary Get connection statistics
// @Tags analytics
// @Produce json
// @Success 200 {object} service.ConnectionStatistics
// @Router /api/analytics/connections [get]
func (h *AnalyticsHandler) GetConnectionStatistics(c *gin.Context) {
	stats, err := h.service.GetConnectionStatistics(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, stats)
}

// GetSupplyDemandAnalysis returns supply and demand analysis
// @Summary Get supply and demand analysis
// @Tags analytics
// @Produce json
// @Success 200 {object} service.SupplyDemandAnalysis
// @Router /api/analytics/supply-demand [get]
func (h *AnalyticsHandler) GetSupplyDemandAnalysis(c *gin.Context) {
	analysis, err := h.service.GetSupplyDemandAnalysis(c.Request.Context())
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, analysis)
}