package tools_test

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

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

func TestIssueListCommentsTool(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		assert.Equal(t, http.MethodGet, r.Method)
		assert.Equal(t, "/api/v1/repos/mathias/infra/issues/42/comments", r.URL.Path)
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`[
			{"id":1,"body":"first","html_url":"http://gitea.example.com/mathias/infra/issues/42#comment-1","user":{"login":"alice"},"created_at":"2026-05-01T00:00:00Z","updated_at":"2026-05-01T00:00:00Z"},
			{"id":2,"body":"second","html_url":"http://gitea.example.com/mathias/infra/issues/42#comment-2","user":{"login":"bob"},"created_at":"2026-05-02T00:00:00Z","updated_at":"2026-05-02T00:00:00Z"}
		]`))
	}))
	defer srv.Close()

	tool := tools.NewIssueListComments(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"mathias"}))
	out, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"mathias","name":"infra","number":42}`))
	require.NoError(t, err)
	assert.Contains(t, string(out), `"id":1`)
	assert.Contains(t, string(out), `"body":"first"`)
	assert.Contains(t, string(out), `"login":"alice"`)
	assert.Contains(t, string(out), `"login":"bob"`)
}

func TestIssueListCommentsTool_Empty(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`[]`))
	}))
	defer srv.Close()

	tool := tools.NewIssueListComments(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"mathias"}))
	out, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"mathias","name":"infra","number":42}`))
	require.NoError(t, err)
	assert.Contains(t, string(out), `[]`)
}

func TestIssueListCommentsTool_NotFound(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusNotFound)
		_, _ = w.Write([]byte(`{"message":"issue not found"}`))
	}))
	defer srv.Close()

	tool := tools.NewIssueListComments(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"mathias"}))
	_, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"mathias","name":"infra","number":999}`))
	require.Error(t, err)
}

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