package agent

import (
	"net/http"
	"strings"

	"ycc-server/app/main/api/internal/logic/agent"
	"ycc-server/app/main/api/internal/svc"
	"ycc-server/app/main/api/internal/types"
	"ycc-server/common/result"
	"ycc-server/pkg/lzkit/validator"

	"github.com/zeromicro/go-zero/rest/httpx"
)

func GetInvitePosterHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var req types.GetInvitePosterReq
		if err := httpx.Parse(r, &req); err != nil {
			result.ParamErrorResult(r, w, err)
			return
		}
		req.Format = strings.TrimSpace(strings.ToLower(req.Format))
		if err := validator.Validate(req); err != nil {
			result.ParamValidateErrorResult(r, w, err)
			return
		}

		l := agent.NewGetInvitePosterLogic(r.Context(), svcCtx)

		if req.Format == "base64" {
			base64Str, err := l.GetInvitePosterBase64(&req)
			if err != nil {
				result.HttpResult(r, w, nil, err)
				return
			}
			result.HttpResult(r, w, &types.GetInvitePosterResp{PosterBase64: base64Str}, nil)
			return
		}

		pngBytes, err := l.GetInvitePoster(&req)
		if err != nil {
			result.HttpResult(r, w, nil, err)
			return
		}
		w.Header().Set("Content-Type", "image/png")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write(pngBytes)
	}
}