package httpapi

import (
	"context"
	"data-terminal-cloud/internal/identity"
	"errors"
	"net/http"
)

type profileUpdater interface {
	UpdateDisplayName(context.Context, identity.Principal, string) error
}

func UpdateCustomerProfileHandler(repository profileUpdater) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		principal, ok := webPrincipal(w, r)
		if !ok {
			return
		}
		var input struct {
			DisplayName string `json:"display_name"`
		}
		if !decodeWebJSON(w, r, &input, "请填写有效昵称") {
			return
		}
		name, err := identity.ValidateDisplayName(input.DisplayName)
		if err != nil {
			writeValidation(w, r, "昵称须为1–80个字符，不能包含控制字符", FieldError{Field: "display_name", Message: "请填写有效昵称"})
			return
		}
		if err = repository.UpdateDisplayName(r.Context(), principal, name); errors.Is(err, identity.ErrAccountNotFound) || errors.Is(err, identity.ErrAccessDenied) {
			WriteError(w, r, http.StatusForbidden, "RESOURCE_ACCESS_DENIED", "当前账号不可修改")
			return
		} else if err != nil {
			WriteError(w, r, http.StatusInternalServerError, "INTERNAL_ERROR", "保存失败，请重试")
			return
		}
		w.Header().Set("Cache-Control", "no-store")
		WriteJSON(w, r, http.StatusOK, map[string]string{"display_name": name})
	})
}