package mcp_test

import (
	"encoding/json"
	"testing"

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

func TestRequestUnmarshal(t *testing.T) {
	raw := []byte(`{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}`)
	var req mcp.Request
	require.NoError(t, json.Unmarshal(raw, &req))
	assert.Equal(t, "2.0", req.JSONRPC)
	assert.Equal(t, "initialize", req.Method)
	// ID is opaque; encoding/json decodes JSON numbers into float64 by default.
	// We don't type-assert in the server — we echo it back unchanged.
	assert.Equal(t, float64(1), req.ID)
}

func TestErrorResponseShape(t *testing.T) {
	resp := mcp.NewErrorResponse(1, mcp.CodePermissionDenied, "no", nil)
	b, _ := json.Marshal(resp)
	assert.JSONEq(t,
		`{"jsonrpc":"2.0","id":1,"error":{"code":-32001,"message":"no"}}`,
		string(b))
}