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

func (h *AdminHandler) registerContent(authed *gin.RouterGroup) {
	authed.GET("/home/tools", middleware.RequireAdminPermission(h.Svc, admin.PermContentWrite), h.ListHomeTools)
	authed.PUT("/home/tools", middleware.RequireAdminPermission(h.Svc, admin.PermContentWrite), h.ReplaceHomeTools)
	authed.GET("/scales", middleware.RequireAdminPermission(h.Svc, admin.PermContentWrite), h.ListScales)
	authed.PATCH("/scales/:id", middleware.RequireAdminPermission(h.Svc, admin.PermContentWrite), h.PatchScale)
}

func (h *AdminHandler) ListHomeTools(c *gin.Context) {
	items, err := h.Svc.ListHomeTools(c.Request.Context())
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50031, "list home tools failed")
		return
	}
	response.OK(c, gin.H{"items": items})
}

func (h *AdminHandler) ReplaceHomeTools(c *gin.Context) {
	adminID, ok := middleware.AdminIDFromContext(c)
	if !ok {
		response.Fail(c, http.StatusUnauthorized, 40101, "admin auth required")
		return
	}
	var body struct {
		Items []homesvc.ReplaceInput `json:"items"`
	}
	if err := c.ShouldBindJSON(&body); err != nil {
		response.Fail(c, http.StatusBadRequest, 40040, "invalid body")
		return
	}
	if err := h.Svc.ReplaceHomeTools(c.Request.Context(), adminID, body.Items); err != nil {
		if errors.Is(err, homesvc.ErrInvalidTools) || errors.Is(err, homesvc.ErrTooManyTools) {
			response.Fail(c, http.StatusBadRequest, 40041, err.Error())
			return
		}
		response.Fail(c, http.StatusInternalServerError, 50032, "replace home tools failed")
		return
	}
	response.OK(c, gin.H{"ok": true})
}

func (h *AdminHandler) ListScales(c *gin.Context) {
	items, err := h.Svc.ListScalesAdmin(c.Request.Context())
	if err != nil {
		response.Fail(c, http.StatusInternalServerError, 50033, "list scales failed")
		return
	}
	response.OK(c, gin.H{"items": items})
}

func (h *AdminHandler) PatchScale(c *gin.Context) {
	adminID, ok := middleware.AdminIDFromContext(c)
	if !ok {
		response.Fail(c, http.StatusUnauthorized, 40101, "admin auth required")
		return
	}
	id, err := uuid.Parse(c.Param("id"))
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 40042, "invalid scale id")
		return
	}
	var body struct {
		Status string `json:"status"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.Status == "" {
		response.Fail(c, http.StatusBadRequest, 40043, "status required")
		return
	}
	if err := h.Svc.PatchScaleStatus(c.Request.Context(), adminID, id, body.Status); err != nil {
		if errors.Is(err, admin.ErrInvalidScaleStatus) {
			response.Fail(c, http.StatusBadRequest, 40044, "invalid status")
			return
		}
		if errors.Is(err, admin.ErrScaleNotFound) {
			response.Fail(c, http.StatusNotFound, 40410, "scale not found")
			return
		}
		response.Fail(c, http.StatusInternalServerError, 50034, "patch scale failed")
		return
	}
	response.OK(c, gin.H{"ok": true})
}