package gitea

import (
	"context"
	"net/http"
	"net/http/httptest"
	"testing"

	"gitea.com/gitea/gitea-mcp/pkg/flag"
)

func TestNewClient_SendsExtraHeaders(t *testing.T) {
	var gotClientID, gotAuthorization string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotClientID = r.Header.Get("CF-Access-Client-Id")
		gotAuthorization = r.Header.Get("Authorization")
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"login":"octocat"}`))
	}))
	defer srv.Close()

	origHost := flag.Host
	origExtraHeaders := flag.ExtraHeaders
	defer func() {
		flag.Host = origHost
		flag.ExtraHeaders = origExtraHeaders
	}()
	flag.Host = srv.URL
	flag.ExtraHeaders = http.Header{
		"Cf-Access-Client-Id": []string{"client-id"},
		"Authorization":       []string{"should-not-override"},
	}

	client, err := NewClient("the-token")
	if err != nil {
		t.Fatalf("NewClient returned error: %v", err)
	}
	if _, _, err := client.Users.GetMyUserInfo(context.Background()); err != nil {
		t.Fatalf("GetMyUserInfo returned error: %v", err)
	}

	if gotClientID != "client-id" {
		t.Fatalf("CF-Access-Client-Id header = %q, want %q", gotClientID, "client-id")
	}
	if gotAuthorization != "token the-token" {
		t.Fatalf("Authorization header = %q, want %q", gotAuthorization, "token the-token")
	}
}