package rc

import (
	"context"
	"fmt"
	"net/http"
	"net/http/httptest"
	"os"
	"runtime"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"github.com/rclone/rclone/fs"
	"github.com/rclone/rclone/fs/config/obscure"
	"github.com/rclone/rclone/fs/version"
)

func TestMain(m *testing.M) {
	// Pretend to be rclone version if we have a version string parameter
	if os.Args[len(os.Args)-1] == "version" {
		fmt.Printf("rclone %s\n", fs.Version)
		os.Exit(0)
	}
	os.Exit(m.Run())
}

func TestInternalNoop(t *testing.T) {
	call := Calls.Get("rc/noop")
	assert.NotNil(t, call)
	in := Params{
		"String": "hello",
		"Int":    42,
	}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.NotNil(t, out)
	assert.Equal(t, in, out)
}

func TestInternalError(t *testing.T) {
	call := Calls.Get("rc/error")
	assert.NotNil(t, call)
	in := Params{}
	out, err := call.Fn(context.Background(), in)
	require.Error(t, err)
	require.Nil(t, out)
}

func TestInternalList(t *testing.T) {
	call := Calls.Get("rc/list")
	assert.NotNil(t, call)
	in := Params{}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.NotNil(t, out)
	assert.Equal(t, Params{"commands": Calls.List()}, out)
}

func TestCorePid(t *testing.T) {
	call := Calls.Get("core/pid")
	assert.NotNil(t, call)
	in := Params{}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.NotNil(t, out)
	pid := out["pid"]
	assert.NotEqual(t, nil, pid)
	_, ok := pid.(int)
	assert.Equal(t, true, ok)
}

func TestCoreMemstats(t *testing.T) {
	call := Calls.Get("core/memstats")
	assert.NotNil(t, call)
	in := Params{}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.NotNil(t, out)
	sys := out["Sys"]
	assert.NotEqual(t, nil, sys)
	_, ok := sys.(uint64)
	assert.Equal(t, true, ok)
}

func TestCoreGC(t *testing.T) {
	call := Calls.Get("core/gc")
	assert.NotNil(t, call)
	in := Params{}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.Nil(t, out)
	assert.Equal(t, Params(nil), out)
}

func TestCoreVersion(t *testing.T) {
	call := Calls.Get("core/version")
	assert.NotNil(t, call)
	in := Params{}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.NotNil(t, out)
	assert.Equal(t, fs.Version, out["version"])
	assert.Equal(t, runtime.GOOS, out["os"])
	assert.Equal(t, runtime.GOARCH, out["arch"])
	assert.Equal(t, runtime.Version(), out["goVersion"])
	_ = out["isGit"].(bool)
	v := out["decomposed"].(version.Version)
	assert.True(t, len(v) >= 2)
}

func TestCoreObscure(t *testing.T) {
	call := Calls.Get("core/obscure")
	assert.NotNil(t, call)
	in := Params{
		"clear": "potato",
	}
	out, err := call.Fn(context.Background(), in)
	require.NoError(t, err)
	require.NotNil(t, out)
	assert.Equal(t, in["clear"], obscure.MustReveal(out["obscured"].(string)))
}

func TestCoreQuit(t *testing.T) {
	//The call should return an error if param exitCode is not parsed to int
	call := Calls.Get("core/quit")
	assert.NotNil(t, call)
	in := Params{
		"exitCode": "potato",
	}
	_, err := call.Fn(context.Background(), in)
	require.Error(t, err)
}

// core/command: Runs a raw rclone command
func TestCoreCommand(t *testing.T) {
	call := Calls.Get("core/command")

	var httpResponse http.ResponseWriter = httptest.NewRecorder()

	in := Params{
		"command":   "version",
		"opt":       map[string]string{},
		"arg":       []string{},
		"_response": &httpResponse,
	}
	got, err := call.Fn(context.Background(), in)
	require.NoError(t, err)

	assert.Equal(t, fmt.Sprintf("rclone %s\n", fs.Version), got["result"])
	assert.Equal(t, false, got["error"])
}