package controllers

import (
	"bytes"
	"encoding/json"
	"io"
	"strconv"
	"strings"

	"server/pkg/jwtutil"

	beego "github.com/beego/beego/v2/server/web"
)

// =============================================================
// 平台官网管理（/platform/website/*）公共工具
// 数据表前缀 yz_platform_website_，建表见 docs/sql/create_platform_website.sql
// =============================================================

// websiteAuth 平台管理员鉴权，失败时已写出错误响应，返回 ok=false
func websiteAuth(c *beego.Controller) (*jwtutil.Claims, bool) {
	claims, err := requirePlatform(c)
	if err != nil {
		jsonErr(c, 401, 401, err.Error())
		return nil, false
	}
	return claims, true
}

// websiteOK 统一成功响应：{ code:200, msg:"success", data:... }
func websiteOK(c *beego.Controller, data interface{}) {
	c.Data["json"] = map[string]interface{}{"code": 200, "msg": "success", "data": data}
	_ = c.ServeJSON()
}

// websitePaging 解析分页参数：page 默认 1，pageSize 默认 10（兼容 limit），上限 200
func websitePaging(c *beego.Controller) (int, int) {
	page, _ := c.GetInt("page", 1)
	pageSize, _ := c.GetInt("pageSize", 0)
	if pageSize <= 0 {
		pageSize, _ = c.GetInt("limit", 0)
	}
	if page < 1 {
		page = 1
	}
	if pageSize < 1 {
		pageSize = 10
	}
	if pageSize > 200 {
		pageSize = 200
	}
	return page, pageSize
}

// websiteID 解析路径参数 :id
func websiteID(c *beego.Controller) (uint64, bool) {
	id, err := strconv.ParseUint(c.Ctx.Input.Param(":id"), 10, 64)
	if err != nil || id == 0 {
		jsonErr(c, 400, 400, "无效ID")
		return 0, false
	}
	return id, true
}

// websiteIntParam 解析整型查询参数，未传或非法时返回 -1（表示不过滤）
func websiteIntParam(c *beego.Controller, key string) int {
	raw := strings.TrimSpace(c.GetString(key))
	if raw == "" {
		return -1
	}
	v, err := strconv.Atoi(raw)
	if err != nil {
		return -1
	}
	return v
}

// websiteStatusParam 解析 status 查询参数，未传时返回 -1（表示不过滤）
func websiteStatusParam(c *beego.Controller) int {
	return websiteIntParam(c, "status")
}

// websiteBind 解析 JSON 请求体到 target，失败时已写出 400
func websiteBind(c *beego.Controller, target interface{}) bool {
	body, err := io.ReadAll(c.Ctx.Request.Body)
	if err != nil {
		jsonErr(c, 400, 400, "参数错误")
		return false
	}
	if err = json.Unmarshal(body, target); err != nil {
		jsonErr(c, 400, 400, "参数错误")
		return false
	}
	return true
}

// websiteBindOptional 宽松解析请求体：body 为空或非法时不作响应，调用方按零值处理
func websiteBindOptional(c *beego.Controller, target interface{}) {
	body, err := io.ReadAll(c.Ctx.Request.Body)
	if err != nil || len(bytes.TrimSpace(body)) == 0 {
		return
	}
	_ = json.Unmarshal(body, target)
}