package tools_test

import (
	"context"
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"testing"

	"gitea.d-ma.be/mathias/gitea-mcp/internal/allowlist"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/gitea"
	"gitea.d-ma.be/mathias/gitea-mcp/internal/tools"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

const commentFixture = `{"id":7,"body":"hello","html_url":"http://example.com/issues/42#comment-7"}`

func TestIssueCommentAppliesFooter(t *testing.T) {
	var captured []byte
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		assert.Equal(t, "/api/v1/repos/o/r/issues/42/comments", r.URL.Path)
		var err error
		captured, err = io.ReadAll(r.Body)
		require.NoError(t, err)
		w.WriteHeader(http.StatusCreated)
		_, _ = w.Write([]byte(commentFixture))
	}))
	defer srv.Close()

	tool := tools.NewIssueComment(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"o"}))
	ctx := callerContext("mathiasbq")
	_, err := tool.Call(ctx, json.RawMessage(`{"owner":"o","name":"r","number":42,"body":"hello"}`))
	require.NoError(t, err)

	var payload map[string]any
	require.NoError(t, json.Unmarshal(captured, &payload))
	body, _ := payload["body"].(string)
	assert.Contains(t, body, "_Created via git-mcp on behalf of @mathiasbq_")
}

func TestIssueCommentAllowlistRejects(t *testing.T) {
	tool := tools.NewIssueComment(gitea.NewClient("http://unused", ""), allowlist.New([]string{"allowed"}))
	_, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"evil","name":"r","number":1,"body":"hi"}`))
	require.Error(t, err)
}

func TestIssueCommentRequiresBody(t *testing.T) {
	tool := tools.NewIssueComment(gitea.NewClient("http://unused", ""), allowlist.New([]string{"o"}))
	_, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"o","name":"r","number":1,"body":""}`))
	require.Error(t, err)
	assert.ErrorIs(t, err, gitea.ErrValidation)
}