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) registerCrisis(authed *gin.RouterGroup) {
	g := authed.Group("/crisis")
	g.GET("/policies", middleware.RequireAdminPermission(h.Svc, admin.PermCrisisRead), h.ListCrisisPolicies)
	g.GET("/policies/:id", middleware.RequireAdminPermission(h.Svc, admin.PermCrisisRead), h.GetCrisisPolicy)
	g.POST("/evaluate", middleware.RequireAdminPermission(h.Svc, admin.PermCrisisRead), h.EvaluateCrisis)
}

func (h *AdminHandler) ListCrisisPolicies(c *gin.Context) {
	items, err := h.Svc.ListCrisisPolicies(c.Request.Context())
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50029, "list crisis policies failed")
		return
	}
	response.OK(c, gin.H{"items": items})
}

func (h *AdminHandler) GetCrisisPolicy(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.GetCrisisPolicy(c.Request.Context(), id)
	if errors.Is(err, admin.ErrCrisisPolicyNotFound) {
		response.Fail(c, http.StatusNotFound, 40405, "crisis policy not found")
		return
	}
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50030, "get crisis policy failed")
		return
	}
	response.OK(c, row)
}

func (h *AdminHandler) EvaluateCrisis(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.EvaluateCrisis(c.Request.Context(), body.Text)
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50031, "evaluate failed")
		return
	}
	response.OK(c, gin.H{"matches": matches})
}