package context

import (
	"admin/internal/errcode"
	"admin/lib/web"
	"admin/lib/xlog"
	"context"
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/gin-gonic/gin/render"
	"net/http"
	"net/url"
	"strings"
)

type WebHeader struct {
	UserId   int    `json:"UserId"` // 用户id，会与下面token解析出用户id做匹配校验
	Token    string `json:"Token"`  // jwt token，内置一些信息
	Ip       string `json:"IP"`
	UserName string `json:"-"`
}

type WebContext struct {
	context.Context
	rawCtx        *gin.Context
	Header        *WebHeader
	alreadySetRsp bool
}

func NewWebContext(rawCtx *gin.Context) web.IContext {
	return &WebContext{Context: context.Background(), rawCtx: rawCtx}
}

func (ctx *WebContext) ExtractHeader() error {
	header := &WebHeader{}
	err := ctx.rawCtx.ShouldBindHeader(header)
	if err != nil {
		return err
	}
	xlog.Debugf("提取请求头：%+v", ctx.GinCtx().Request.Header)
	ctx.Header = header
	return nil
}

func (ctx *WebContext) IsUserLogin() bool {
	return ctx.Header != nil && ctx.Header.UserId > 0
}

func (ctx *WebContext) GinCtx() *gin.Context {
	return ctx.rawCtx
}

func (ctx *WebContext) Ok(data any) {
	if ctx.alreadySetRsp {
		return
	}

	ctx.rawCtx.JSON(200, map[string]any{
		"code": 200,
		"msg":  "",
		"data": data,
	})

	ctx.alreadySetRsp = true
}

func (ctx *WebContext) Fail(err error) {
	if ctx.alreadySetRsp {
		return
	}

	code, codeContent, stack, msg := errcode.ParseError(err)
	ctx.rawCtx.JSON(200, map[string]any{
		"code":       code,
		"stack":      stack,
		"msg":        codeContent,
		"detail_msg": msg,
		"data":       "",
	})

	ctx.alreadySetRsp = true
}

func (ctx *WebContext) OkFile(fileName string, content string) {
	if ctx.alreadySetRsp {
		return
	}

	reader := strings.NewReader(string(content))
	contentLength := len(content)
	contentType := ""

	fileName = url.QueryEscape(fileName)
	valueName := fmt.Sprintf(`"attachment; filename*=utf-8''%v"`, fileName)
	extraHeaders := map[string]string{
		"Content-Disposition":       valueName,
		"Content-Transfer-Encoding": "binary",
	}

	ctx.GinCtx().Render(http.StatusOK, render.Reader{
		Headers:       extraHeaders,
		ContentType:   contentType,
		ContentLength: int64(contentLength),
		Reader:        reader,
	})

	ctx.alreadySetRsp = true
}

func (ctx *WebContext) HandleError(path string, err error) {
	xlog.Errorf("path:%v handle error:%v ", path, err)
	ctx.Fail(err)
}
func (ctx *WebContext) HandleSuccess(rspData any) {
	ctx.Ok(rspData)
}