package handler

import (
	"errors"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/google/uuid"

	"github.com/yuxingu/digital-psychology/apps/api/internal/middleware"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/admin"
	"github.com/yuxingu/digital-psychology/apps/api/pkg/response"
)

func (h *AdminHandler) registerContentSafety(authed *gin.RouterGroup) {
	g := authed.Group("/content-safety")
	g.GET("/filter-rules", middleware.RequireAdminPermission(h.Svc, admin.PermContentSafetyRead), h.ListFilterRules)
	g.GET("/filter-rules/:id", middleware.RequireAdminPermission(h.Svc, admin.PermContentSafetyRead), h.GetFilterRule)
	g.POST("/evaluate", middleware.RequireAdminPermission(h.Svc, admin.PermContentSafetyRead), h.EvaluateContent)
}

func (h *AdminHandler) ListFilterRules(c *gin.Context) {
	items, err := h.Svc.ListFilterRules(c.Request.Context())
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50022, "list filter rules failed")
		return
	}
	response.OK(c, gin.H{"items": items})
}

func (h *AdminHandler) GetFilterRule(c *gin.Context) {
	id, err := uuid.Parse(c.Param("id"))
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 40002, "invalid id")
		return
	}
	row, err := h.Svc.GetFilterRule(c.Request.Context(), id)
	if errors.Is(err, admin.ErrFilterRuleNotFound) {
		response.Fail(c, http.StatusNotFound, 40403, "filter rule not found")
		return
	}
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50023, "get filter rule failed")
		return
	}
	response.OK(c, row)
}

func (h *AdminHandler) EvaluateContent(c *gin.Context) {
	var body struct {
		Text string `json:"text"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		response.Fail(c, http.StatusBadRequest, 40000, "invalid body")
		return
	}
	matches, err := h.Svc.EvaluateContent(c.Request.Context(), body.Text)
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50024, "evaluate failed")
		return
	}
	response.OK(c, gin.H{"matches": matches})
}