/*
Copyright 2021 The Dapr Authors
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 client

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"

	v1 "github.com/dapr/dapr/pkg/proto/common/v1"
)

type _testStructwithText struct {
	Key1, Key2 string
}

type _testStructwithTextandNumbers struct {
	Key1 string
	Key2 int
}

type _testStructwithSlices struct {
	Key1 []string
	Key2 []int
}

func TestInvokeMethodWithContent(t *testing.T) {
	ctx := context.Background()
	data := "ping"

	t.Run("with content", func(t *testing.T) {
		content := &DataContent{
			ContentType: "text/plain",
			Data:        []byte(data),
		}
		resp, err := testClient.InvokeMethodWithContent(ctx, "test", "fn", "post", content)
		assert.Nil(t, err)
		assert.NotNil(t, resp)
		assert.Equal(t, string(resp), data)
	})

	t.Run("with content, method contains querystring", func(t *testing.T) {
		content := &DataContent{
			ContentType: "text/plain",
			Data:        []byte(data),
		}
		resp, err := testClient.InvokeMethodWithContent(ctx, "test", "fn?foo=bar&url=http://dapr.io", "get", content)
		assert.Nil(t, err)
		assert.NotNil(t, resp)
		assert.Equal(t, string(resp), data)
	})

	t.Run("without content", func(t *testing.T) {
		resp, err := testClient.InvokeMethod(ctx, "test", "fn", "get")
		assert.Nil(t, err)
		assert.Nil(t, resp)
	})

	t.Run("without service ID", func(t *testing.T) {
		_, err := testClient.InvokeMethod(ctx, "", "fn", "get")
		assert.NotNil(t, err)
	})
	t.Run("without method", func(t *testing.T) {
		_, err := testClient.InvokeMethod(ctx, "test", "", "get")
		assert.NotNil(t, err)
	})
	t.Run("without verb", func(t *testing.T) {
		_, err := testClient.InvokeMethod(ctx, "test", "fn", "")
		assert.NotNil(t, err)
	})
	t.Run("from struct with text", func(t *testing.T) {
		testdata := _testCustomContentwithText{
			Key1: "value1",
			Key2: "value2",
		}
		_, err := testClient.InvokeMethodWithCustomContent(ctx, "test", "fn", "post", "text/plain", testdata)
		assert.Nil(t, err)
	})

	t.Run("from struct with text and numbers", func(t *testing.T) {
		testdata := _testCustomContentwithTextandNumbers{
			Key1: "value1",
			Key2: 2500,
		}
		_, err := testClient.InvokeMethodWithCustomContent(ctx, "test", "fn", "post", "text/plain", testdata)
		assert.Nil(t, err)
	})

	t.Run("from struct with slices", func(t *testing.T) {
		testdata := _testCustomContentwithSlices{
			Key1: []string{"value1", "value2", "value3"},
			Key2: []int{25, 40, 600},
		}
		_, err := testClient.InvokeMethodWithCustomContent(ctx, "test", "fn", "post", "text/plain", testdata)
		assert.Nil(t, err)
	})
}

func TestVerbParsing(t *testing.T) {
	t.Run("valid lower case", func(t *testing.T) {
		v := queryAndVerbToHTTPExtension("", "post")
		assert.NotNil(t, v)
		assert.Equal(t, v1.HTTPExtension_POST, v.Verb)
		assert.Len(t, v.Querystring, 0)
	})

	t.Run("valid upper case", func(t *testing.T) {
		v := queryAndVerbToHTTPExtension("", "GET")
		assert.NotNil(t, v)
		assert.Equal(t, v1.HTTPExtension_GET, v.Verb)
	})

	t.Run("invalid verb", func(t *testing.T) {
		v := queryAndVerbToHTTPExtension("", "BAD")
		assert.NotNil(t, v)
		assert.Equal(t, v1.HTTPExtension_NONE, v.Verb)
	})

	t.Run("valid query", func(t *testing.T) {
		v := queryAndVerbToHTTPExtension("foo=bar&url=http://dapr.io", "post")
		assert.NotNil(t, v)
		assert.Equal(t, v1.HTTPExtension_POST, v.Verb)
		assert.Equal(t, "foo=bar&url=http://dapr.io", v.Querystring)
	})
}

func TestExtractMethodAndQuery(t *testing.T) {
	type args struct {
		name string
	}
	tests := []struct {
		name       string
		args       args
		wantMethod string
		wantQuery  string
	}{
		{
			"pure uri",
			args{name: "method"},
			"method",
			"",
		},
		{
			"root route method",
			args{name: "/"},
			"/",
			"",
		},
		{
			"uri with one query",
			args{name: "method?foo=bar"},
			"method",
			"foo=bar",
		},
		{
			"uri with two query",
			args{name: "method?foo=bar&url=http://dapr.io"},
			"method",
			"foo=bar&url=http://dapr.io",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			gotMethod, gotQuery := extractMethodAndQuery(tt.args.name)
			if gotMethod != tt.wantMethod {
				t.Errorf("extractMethodAndQuery() gotMethod = %v, want %v", gotMethod, tt.wantMethod)
			}
			if gotQuery != tt.wantQuery {
				t.Errorf("extractMethodAndQuery() gotQuery = %v, want %v", gotQuery, tt.wantQuery)
			}
		})
	}
}