package tools_test

import (
	"context"
	"encoding/json"
	"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"
)

func TestPRListReturnsOpenPRs(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		assert.Equal(t, "open", r.URL.Query().Get("state"))
		w.Header().Set("Content-Type", "application/json")
		_, _ = w.Write([]byte(`[{
			"number":7,"title":"Add feature X","html_url":"http://example.com/pulls/7",
			"state":"open","draft":false,
			"head":{"ref":"feat/x"},"base":{"ref":"main"}
		}]`))
	}))
	defer srv.Close()

	tool := tools.NewPRList(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"owner"}))
	out, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"owner","name":"repo"}`))
	require.NoError(t, err)

	var result []map[string]any
	require.NoError(t, json.Unmarshal(out, &result))
	require.Len(t, result, 1)
	assert.Equal(t, float64(7), result[0]["number"])
	assert.Equal(t, "feat/x", result[0]["head_branch"])
	assert.Equal(t, "main", result[0]["base_branch"])
}

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

	tool := tools.NewPRList(gitea.NewClient(srv.URL, "tok"), allowlist.New([]string{"owner"}))
	out, err := tool.Call(context.Background(), json.RawMessage(`{"owner":"owner","name":"repo"}`))
	require.NoError(t, err)

	var result []map[string]any
	require.NoError(t, json.Unmarshal(out, &result))
	assert.Empty(t, result)
}

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