package handlers

import (
	"net/http"

	"github.com/creativenoz/aurganize-v62/backend/internal/services"
	"github.com/google/uuid"
	"github.com/labstack/echo/v4"
	"github.com/rs/zerolog/log"
)

type TenantHandler struct {
	tenantService *services.TenantService
}

func NewTenantHanlder(tenantService *services.TenantService) *TenantHandler {
	log.Info().
		Str("handler", "tenant").
		Str("component", "handler_init").
		Msg("tenant handler initialized")
	return &TenantHandler{
		tenantService: tenantService,
	}
}

func (th *TenantHandler) GetTenant(c echo.Context) error {
	rawTenantId := c.Param("id")
	log.Info().
		Str("handler", "tenant").
		Str("action", "get_tenant_attempt").
		Str("tenant_id", rawTenantId).
		Str("ip", c.RealIP()).
		Msg("attempting to get tenant by id")

	tenantId, err := uuid.Parse(rawTenantId)
	if err != nil {
		log.Warn().
			Str("handler", "tenant").
			Str("action", "invalid_tenant_id_format").
			Str("invalid_id", rawTenantId).
			Str("ip", c.RealIP()).
			Err(err).
			Msg("failed to parse tenant id - invalid uuid format")
		return echo.NewHTTPError(http.StatusBadRequest, "invalid tenant id")
	}

	ctx := c.Request().Context()
	log.Debug().
		Str("handler", "tenant").
		Str("action", "fetching_tenant_from_service").
		Str("tenant_id", tenantId.String()).
		Msg("querying tenant service for tenant data")

	tenant, err := th.tenantService.GetByID(ctx, tenantId)
	if err != nil {
		log.Warn().
			Str("handler", "tenant").
			Str("action", "tenant_not_found").
			Str("tenant_id", tenantId.String()).
			Str("ip", c.RealIP()).
			Err(err).
			Msg("tenant not found in database")
		return echo.NewHTTPError(http.StatusNotFound, "tenant not found")
	}
	log.Debug().
		Str("handler", "tenant").
		Str("action", "checking_tenant_authorization").
		Str("tenant_id", tenant.ID.String()).
		Str("tenant_name", tenant.Name).
		Msg("tenant found, verifying user authorization")

	userTenantId, ok := c.Get("tenant_id").(uuid.UUID)
	if !ok {
		log.Error().
			Str("handler", "tenant").
			Str("action", "missing_user_tenant_context").
			Interface("context_value", c.Get("tenant_id")).
			Str("ip", c.RealIP()).
			Msg("user tenant id missing or invalid in request context - middleware issue")
		return echo.NewHTTPError(http.StatusBadRequest, "invalid user tenant id")
	}
	log.Debug().
		Str("handler", "tenant").
		Str("action", "tenant_authorization_check").
		Str("requested_tenant_id", tenant.ID.String()).
		Str("user_tenant_id", userTenantId.String()).
		Bool("match", tenant.ID == userTenantId).
		Msg("comparing requested tenant with user's tenant")

	if tenant.ID != userTenantId {
		log.Warn().
			Str("handler", "tenant").
			Str("action", "tenant_access_denied").
			Str("requested_tenant_id", tenant.ID.String()).
			Str("user_tenant_id", userTenantId.String()).
			Str("requested_tenant_name", tenant.Name).
			Str("ip", c.RealIP()).
			Str("user_agent", c.Request().UserAgent()).
			Msg("access denied - user attempted to access different tenant")
		return echo.NewHTTPError(http.StatusForbidden, "acces denied")
	}
	log.Info().
		Str("handler", "tenant").
		Str("action", "get_tenant_success").
		Str("tenant_id", tenant.ID.String()).
		Str("tenant_name", tenant.Name).
		Str("user_tenant_id", userTenantId.String()).
		Str("ip", c.RealIP()).
		Msg("tenant retrieved successfully")
	return c.JSON(http.StatusOK, tenant.ToResponse())
}

func (th *TenantHandler) GetMyTenant(c echo.Context) error {
	log.Info().
		Str("handler", "tenant").
		Str("action", "get_my_tenant_attempt").
		Str("ip", c.RealIP()).
		Msg("user requesting their own tenant information")
	tenantID, ok := c.Get("tenant_id").(uuid.UUID)
	if !ok {
		log.Error().
			Str("handler", "tenant").
			Str("action", "get_my_tenant_missing_context").
			Interface("context_value", c.Get("tenant_id")).
			Str("ip", c.RealIP()).
			Msg("tenant id missing from authenticated request context - authentication issue")
		return echo.NewHTTPError(http.StatusBadRequest, "invalid tenant id")
	}
	log.Debug().
		Str("handler", "tenant").
		Str("action", "fetching_my_tenant_from_service").
		Str("tenant_id", tenantID.String()).
		Msg("querying tenant service for user's tenant")

	ctx := c.Request().Context()

	tenant, err := th.tenantService.GetByID(ctx, tenantID)
	if err != nil {
		log.Error().
			Str("handler", "tenant").
			Str("action", "my_tenant_not_found").
			Str("tenant_id", tenantID.String()).
			Str("ip", c.RealIP()).
			Err(err).
			Msg("CRITICAL: user's tenant not found in database - data consistency issue")
		return echo.NewHTTPError(http.StatusInternalServerError, "failed to retrieve tenant")
	}
	log.Info().
		Str("handler", "tenant").
		Str("action", "get_my_tenant_success").
		Str("tenant_id", tenant.ID.String()).
		Str("tenant_name", tenant.Name).
		Str("ip", c.RealIP()).
		Msg("user's tenant retrieved successfully")
	return c.JSON(http.StatusOK, tenant.ToResponse())

}