// Copyright 2022-2023 EMQ Technologies Co., Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package protobuf

import (
	"fmt"
	"os"
	"path/filepath"
	"reflect"
	"testing"

	"github.com/lf-edge/ekuiper/internal/conf"
	"github.com/lf-edge/ekuiper/internal/schema"
	"github.com/lf-edge/ekuiper/internal/testx"
)

func TestEncode(t *testing.T) {
	c, err := NewConverter("../../schema/test/test1.proto", "", "Person")
	if err != nil {
		t.Fatal(err)
	}
	tests := []struct {
		m map[string]interface{}
		r []byte
		e string
	}{
		{
			m: map[string]interface{}{
				"name": "test",
				"id":   1,
				"age":  1,
			},
			r: []byte{0x0a, 0x04, 0x74, 0x65, 0x73, 0x74, 0x10, 0x01, 0x1a, 0x00},
		}, {
			m: map[string]interface{}{
				"name":  "test",
				"id":    1,
				"email": "Dddd",
			},
			r: []byte{0x0a, 0x04, 0x74, 0x65, 0x73, 0x74, 0x10, 0x01, 0x1a, 0x04, 0x44, 0x64, 0x64, 0x64},
		},
	}
	fmt.Printf("The test bucket size is %d.\n\n", len(tests))
	for i, tt := range tests {
		a, err := c.Encode(tt.m)
		if !reflect.DeepEqual(tt.e, testx.Errstring(err)) {
			t.Errorf("%d.error mismatch:\n  exp=%s\n  got=%s\n\n", i, tt.e, err)
		} else if tt.e == "" && !reflect.DeepEqual(tt.r, a) {
			t.Errorf("%d. \n\nresult mismatch:\n\nexp=%x\n\ngot=%x\n\n", i, tt.r, a)
		}
	}
}

func TestEmbedType(t *testing.T) {
	c, err := NewConverter("../../schema/test/test3.proto", "", "DrivingData")
	if err != nil {
		t.Fatal(err)
	}
	tests := []struct {
		m map[string]interface{}
		r []byte
		e string
	}{
		{
			m: map[string]interface{}{
				"drvg_mod": int64(1),
				"brk_pedal_sts": map[string]interface{}{
					"valid": int64(0),
				},
				"average_speed": 90.56,
			},
			r: []byte{0x08, 0x01, 0x11, 0xa4, 0x70, 0x3d, 0x0a, 0xd7, 0xa3, 0x56, 0x40, 0x1a, 0x02, 0x08, 0x00},
		},
	}
	fmt.Printf("The test bucket size is %d.\n\n", len(tests))
	for i, tt := range tests {
		a, err := c.Encode(tt.m)
		if !reflect.DeepEqual(tt.e, testx.Errstring(err)) {
			t.Errorf("%d.error mismatch:\n  exp=%s\n  got=%s\n\n", i, tt.e, err)
		} else if tt.e == "" && !reflect.DeepEqual(tt.r, a) {
			t.Errorf("%d. \n\nresult mismatch:\n\nexp=%x\n\ngot=%x\n\n", i, tt.r, a)
		}
		m, err := c.Decode(a)
		if !reflect.DeepEqual(tt.e, testx.Errstring(err)) {
			t.Errorf("%d.error mismatch:\n  exp=%s\n  got=%s\n\n", i, tt.e, err)
		} else if tt.e == "" && !reflect.DeepEqual(tt.m, m) {
			t.Errorf("%d. \n\nresult mismatch:\n\nexp=%v\n\ngot=%v\n\n", i, tt.m, m)
		}
	}
}

func TestDecode(t *testing.T) {
	c, err := NewConverter("../../schema/test/test1.proto", "", "Person")
	if err != nil {
		t.Fatal(err)
	}
	tests := []struct {
		m map[string]interface{}
		r []byte
		e string
	}{
		{
			m: map[string]interface{}{
				"name":  "test",
				"id":    int64(1),
				"email": "Dddd",
				"code":  []interface{}{},
			},
			r: []byte{0x0a, 0x04, 0x74, 0x65, 0x73, 0x74, 0x10, 0x01, 0x1a, 0x04, 0x44, 0x64, 0x64, 0x64},
		},
	}
	fmt.Printf("The test bucket size is %d.\n\n", len(tests))
	for i, tt := range tests {
		a, err := c.Decode(tt.r)
		if !reflect.DeepEqual(tt.e, testx.Errstring(err)) {
			t.Errorf("%d.error mismatch:\n  exp=%s\n  got=%s\n\n", i, tt.e, err)
		} else if tt.e == "" && !reflect.DeepEqual(tt.m, a) {
			t.Errorf("%d. \n\nresult mismatch:\n\nexp=%v\n\ngot=%v\n\n", i, tt.m, a)
		}
	}
}

func TestStatic(t *testing.T) {
	dataDir, err := conf.GetDataLoc()
	if err != nil {
		t.Fatal(err)
	}
	etcDir := filepath.Join(dataDir, "schemas", "custom")
	err = os.MkdirAll(etcDir, os.ModePerm)
	if err != nil {
		t.Fatal(err)
	}
	defer func() {
		err = os.RemoveAll(etcDir)
		if err != nil {
			t.Fatal(err)
		}
	}()
	// build the so file into data/test prior to running the test
	// Copy the helloworld.so
	bytesRead, err := os.ReadFile(filepath.Join(dataDir, "helloworld.so"))
	if err != nil {
		t.Fatal(err)
	}
	err = os.WriteFile(filepath.Join(etcDir, "helloworld.so"), bytesRead, 0o755)
	if err != nil {
		t.Fatal(err)
	}
	schema.InitRegistry()
	c, err := NewConverter("../../schema/test/test1.proto", "../../../data/test/schemas/custom/helloworld.so", "HelloReply")
	if err != nil {
		t.Fatal(err)
	}
	tests := []struct {
		m map[string]interface{}
		r []byte
		e string
	}{
		{
			m: map[string]interface{}{
				"message": "test",
			},
			r: []byte{0x0a, 0x04, 0x74, 0x65, 0x73, 0x74},
		}, {
			m: map[string]interface{}{
				"message": "another test 2",
			},
			r: []byte{0x0a, 0x0e, 0x61, 0x6e, 0x6f, 0x74, 0x68, 0x65, 0x72, 0x20, 0x74, 0x65, 0x73, 0x74, 0x20, 0x32},
		},
	}
	fmt.Printf("The test bucket size is %d.\n\n", len(tests))
	for i, tt := range tests {
		a, err := c.Encode(tt.m)
		if !reflect.DeepEqual(tt.e, testx.Errstring(err)) {
			t.Errorf("%d.error mismatch:\n  exp=%s\n  got=%s\n\n", i, tt.e, err)
		} else if tt.e == "" && !reflect.DeepEqual(tt.r, a) {
			t.Errorf("%d. \n\nresult mismatch:\n\nexp=%x\n\ngot=%x\n\n", i, tt.r, a)
		}
		m, err := c.Decode(tt.r)
		if !reflect.DeepEqual(tt.e, testx.Errstring(err)) {
			t.Errorf("%d.error mismatch:\n  exp=%s\n  got=%s\n\n", i, tt.e, err)
		} else if tt.e == "" && !reflect.DeepEqual(tt.m, m) {
			t.Errorf("%d. \n\nresult mismatch:\n\nexp=%v\n\ngot=%v\n\n", i, tt.m, m)
		}
	}
}