package common

import (
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"

	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
)

func TestIsSystemField(t *testing.T) {
	type args struct {
		fieldID int64
	}
	tests := []struct {
		name string
		args args
		want bool
	}{
		{
			args: args{fieldID: StartOfUserFieldID},
			want: false,
		},
		{
			args: args{fieldID: StartOfUserFieldID + 1},
			want: false,
		},
		{
			args: args{fieldID: TimeStampField},
			want: true,
		},
		{
			args: args{fieldID: RowIDField},
			want: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			assert.Equalf(t, tt.want, IsSystemField(tt.args.fieldID), "IsSystemField(%v)", tt.args.fieldID)
		})
	}
}

func TestDatabaseProperties(t *testing.T) {
	props := []*commonpb.KeyValuePair{
		{
			Key:   DatabaseReplicaNumber,
			Value: "3",
		},
		{
			Key:   DatabaseResourceGroups,
			Value: strings.Join([]string{"rg1", "rg2"}, ","),
		},
	}

	replicaNum, err := DatabaseLevelReplicaNumber(props)
	assert.NoError(t, err)
	assert.Equal(t, int64(3), replicaNum)

	rgs, err := DatabaseLevelResourceGroups(props)
	assert.NoError(t, err)
	assert.Contains(t, rgs, "rg1")
	assert.Contains(t, rgs, "rg2")

	// test prop not found
	_, err = DatabaseLevelReplicaNumber(nil)
	assert.Error(t, err)

	_, err = DatabaseLevelResourceGroups(nil)
	assert.Error(t, err)

	// test invalid prop value

	props = []*commonpb.KeyValuePair{
		{
			Key:   DatabaseReplicaNumber,
			Value: "xxxx",
		},
		{
			Key:   DatabaseResourceGroups,
			Value: "",
		},
	}
	_, err = DatabaseLevelReplicaNumber(props)
	assert.Error(t, err)

	_, err = DatabaseLevelResourceGroups(props)
	assert.Error(t, err)
}

func TestCommonPartitionKeyIsolation(t *testing.T) {
	getProto := func(val string) []*commonpb.KeyValuePair {
		return []*commonpb.KeyValuePair{
			{
				Key:   PartitionKeyIsolationKey,
				Value: val,
			},
		}
	}

	getMp := func(val string) map[string]string {
		return map[string]string{
			PartitionKeyIsolationKey: val,
		}
	}

	t.Run("pb", func(t *testing.T) {
		props := getProto("true")
		res, err := IsPartitionKeyIsolationKvEnabled(props...)
		assert.NoError(t, err)
		assert.True(t, res)

		props = getProto("false")
		res, err = IsPartitionKeyIsolationKvEnabled(props...)
		assert.NoError(t, err)
		assert.False(t, res)

		props = getProto("")
		res, err = IsPartitionKeyIsolationKvEnabled(props...)
		assert.ErrorContains(t, err, "failed to parse partition key isolation")
		assert.False(t, res)

		props = getProto("invalid")
		res, err = IsPartitionKeyIsolationKvEnabled(props...)
		assert.ErrorContains(t, err, "failed to parse partition key isolation")
		assert.False(t, res)
	})

	t.Run("map", func(t *testing.T) {
		props := getMp("true")
		res, err := IsPartitionKeyIsolationPropEnabled(props)
		assert.NoError(t, err)
		assert.True(t, res)

		props = getMp("false")
		res, err = IsPartitionKeyIsolationPropEnabled(props)
		assert.NoError(t, err)
		assert.False(t, res)

		props = getMp("")
		res, err = IsPartitionKeyIsolationPropEnabled(props)
		assert.ErrorContains(t, err, "failed to parse partition key isolation property")
		assert.False(t, res)

		props = getMp("invalid")
		res, err = IsPartitionKeyIsolationPropEnabled(props)
		assert.ErrorContains(t, err, "failed to parse partition key isolation property")
		assert.False(t, res)
	})
}

func TestShouldFieldBeLoaded(t *testing.T) {
	type testCase struct {
		tag          string
		input        []*commonpb.KeyValuePair
		expectOutput bool
		expectError  bool
	}

	testcases := []testCase{
		{tag: "no_params", expectOutput: true},
		{tag: "skipload_true", input: []*commonpb.KeyValuePair{{Key: FieldSkipLoadKey, Value: "true"}}, expectOutput: false},
		{tag: "skipload_false", input: []*commonpb.KeyValuePair{{Key: FieldSkipLoadKey, Value: "false"}}, expectOutput: true},
		{tag: "bad_skip_load_value", input: []*commonpb.KeyValuePair{{Key: FieldSkipLoadKey, Value: "abc"}}, expectError: true},
	}

	for _, tc := range testcases {
		t.Run(tc.tag, func(t *testing.T) {
			result, err := ShouldFieldBeLoaded(tc.input)
			if tc.expectError {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
				assert.Equal(t, tc.expectOutput, result)
			}
		})
	}
}