package domain_test

import (
	"fmt"
	"testing"
	"time"

	"gitea.dwysokinski.me/twhelp/core/internal/domain"
	"gitea.dwysokinski.me/twhelp/core/internal/domain/domaintest"
	"github.com/brianvoe/gofakeit/v7"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestNewCreateServerSnapshotParams(t *testing.T) {
	t.Parallel()

	server := domaintest.NewServer(t)
	date := time.Now()

	params, err := domain.NewCreateServerSnapshotParams(server, date)
	require.NoError(t, err)
	assert.Equal(t, server.Key(), params.ServerKey())
	assert.Equal(t, server.NumPlayers(), params.NumPlayers())
	assert.Equal(t, server.NumActivePlayers(), params.NumActivePlayers())
	assert.Equal(t, server.NumInactivePlayers(), params.NumInactivePlayers())
	assert.Equal(t, server.NumTribes(), params.NumTribes())
	assert.Equal(t, server.NumActiveTribes(), params.NumActiveTribes())
	assert.Equal(t, server.NumInactiveTribes(), params.NumInactiveTribes())
	assert.Equal(t, server.NumVillages(), params.NumVillages())
	assert.Equal(t, server.NumPlayerVillages(), params.NumPlayerVillages())
	assert.Equal(t, server.NumBarbarianVillages(), params.NumBarbarianVillages())
	assert.Equal(t, server.NumBonusVillages(), params.NumBonusVillages())
	assert.Equal(t, date, params.Date())
}

func TestServerSnapshotSort_IsInConflict(t *testing.T) {
	t.Parallel()

	type args struct {
		sorts [2]domain.ServerSnapshotSort
	}

	tests := []struct {
		name        string
		args        args
		expectedRes bool
	}{
		{
			name: "OK: id:ASC serverKey:ASC",
			args: args{
				sorts: [2]domain.ServerSnapshotSort{domain.ServerSnapshotSortIDASC, domain.ServerSnapshotSortServerKeyASC},
			},
			expectedRes: false,
		},
		{
			name: "OK: id:DESC serverKey:ASC",
			args: args{
				sorts: [2]domain.ServerSnapshotSort{domain.ServerSnapshotSortIDDESC, domain.ServerSnapshotSortServerKeyASC},
			},
			expectedRes: false,
		},
		{
			name: "OK: id:ASC id:ASC",
			args: args{
				sorts: [2]domain.ServerSnapshotSort{domain.ServerSnapshotSortIDASC, domain.ServerSnapshotSortIDASC},
			},
			expectedRes: true,
		},
		{
			name: "OK: id:ASC id:DESC",
			args: args{
				sorts: [2]domain.ServerSnapshotSort{domain.ServerSnapshotSortIDASC, domain.ServerSnapshotSortIDDESC},
			},
			expectedRes: true,
		},
		{
			name: "OK: date:ASC date:DESC",
			args: args{
				sorts: [2]domain.ServerSnapshotSort{domain.ServerSnapshotSortDateASC, domain.ServerSnapshotSortDateDESC},
			},
			expectedRes: true,
		},
		{
			name: "OK: serverKey:DESC serverKey:ASC",
			args: args{
				sorts: [2]domain.ServerSnapshotSort{domain.ServerSnapshotSortServerKeyDESC, domain.ServerSnapshotSortServerKeyASC},
			},
			expectedRes: true,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			assert.Equal(t, tt.expectedRes, tt.args.sorts[0].IsInConflict(tt.args.sorts[1]))
		})
	}
}

func TestNewServerSnapshotCursor(t *testing.T) {
	t.Parallel()

	validServerSnapshotCursor := domaintest.NewServerSnapshotCursor(t)

	type args struct {
		id        int
		serverKey string
		date      time.Time
	}

	type test struct {
		name        string
		args        args
		expectedErr error
	}

	tests := []test{
		{
			name: "OK",
			args: args{
				id:        validServerSnapshotCursor.ID(),
				serverKey: validServerSnapshotCursor.ServerKey(),
				date:      validServerSnapshotCursor.Date(),
			},
			expectedErr: nil,
		},
		{
			name: "ERR: id < 1",
			args: args{
				id:        0,
				serverKey: validServerSnapshotCursor.ServerKey(),
				date:      validServerSnapshotCursor.Date(),
			},
			expectedErr: domain.ValidationError{
				Model: "ServerSnapshotCursor",
				Field: "id",
				Err: domain.MinGreaterEqualError{
					Min:     1,
					Current: 0,
				},
			},
		},
	}

	for _, serverKeyTest := range newServerKeyValidationTests() {
		tests = append(tests, test{
			name: serverKeyTest.name,
			args: args{
				id:        validServerSnapshotCursor.ID(),
				serverKey: serverKeyTest.key,
			},
			expectedErr: domain.ValidationError{
				Model: "ServerSnapshotCursor",
				Field: "serverKey",
				Err:   serverKeyTest.expectedErr,
			},
		})
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			ssc, err := domain.NewServerSnapshotCursor(
				tt.args.id,
				tt.args.serverKey,
				tt.args.date,
			)
			require.ErrorIs(t, err, tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, tt.args.id, ssc.ID())
			assert.Equal(t, tt.args.serverKey, ssc.ServerKey())
			assert.Equal(t, tt.args.date, ssc.Date())
			assert.NotEmpty(t, ssc.Encode())
		})
	}
}

func TestListServerSnapshotsParams_SetServerKeys(t *testing.T) {
	t.Parallel()

	type args struct {
		serverKeys []string
	}

	type test struct {
		name        string
		args        args
		expectedErr error
	}

	tests := []test{
		{
			name: "OK",
			args: args{
				serverKeys: []string{
					domaintest.RandServerKey(),
				},
			},
		},
	}

	for _, serverKeyTest := range newServerKeyValidationTests() {
		tests = append(tests, test{
			name: serverKeyTest.name,
			args: args{
				serverKeys: []string{serverKeyTest.key},
			},
			expectedErr: domain.SliceElementValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "serverKeys",
				Index: 0,
				Err:   serverKeyTest.expectedErr,
			},
		})
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			params := domain.NewListServerSnapshotsParams()

			require.ErrorIs(t, params.SetServerKeys(tt.args.serverKeys), tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, tt.args.serverKeys, params.ServerKeys())
		})
	}
}

func TestListServerSnapshotsParams_SetSort(t *testing.T) {
	t.Parallel()

	type args struct {
		sort []domain.ServerSnapshotSort
	}

	tests := []struct {
		name        string
		args        args
		expectedErr error
	}{
		{
			name: "OK",
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortServerKeyASC,
				},
			},
		},
		{
			name: "OK: empty slice",
			args: args{
				sort: nil,
			},
		},
		{
			name: "ERR: len(sort) > 3",
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortServerKeyASC,
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortIDDESC,
				},
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.LenOutOfRangeError{
					Min:     0,
					Max:     3,
					Current: 4,
				},
			},
		},
		{
			name: "ERR: conflict",
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortIDDESC,
				},
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.SortConflictError{
					Sort: [2]string{domain.ServerSnapshotSortIDASC.String(), domain.ServerSnapshotSortIDDESC.String()},
				},
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			params := domain.NewListServerSnapshotsParams()

			require.ErrorIs(t, params.SetSort(tt.args.sort), tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, tt.args.sort, params.Sort())
		})
	}
}

func TestListServerSnapshotsParams_PrependSort(t *testing.T) {
	t.Parallel()

	defaultNewParams := func(t *testing.T) domain.ListServerSnapshotsParams {
		t.Helper()
		return domain.ListServerSnapshotsParams{}
	}

	type args struct {
		sort []domain.ServerSnapshotSort
	}

	tests := []struct {
		name        string
		newParams   func(t *testing.T) domain.ListServerSnapshotsParams
		args        args
		expectedErr error
	}{
		{
			name: "OK",
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortServerKeyASC,
					domain.ServerSnapshotSortDateASC,
				},
			},
		},
		{
			name: "OK: custom params",
			newParams: func(t *testing.T) domain.ListServerSnapshotsParams {
				t.Helper()
				params := domain.NewListServerSnapshotsParams()
				require.NoError(t, params.SetSort([]domain.ServerSnapshotSort{
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortServerKeyASC,
				}))
				return params
			},
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortDateASC,
				},
			},
		},
		{
			name: "OK: empty slice",
			newParams: func(t *testing.T) domain.ListServerSnapshotsParams {
				t.Helper()
				params := domain.NewListServerSnapshotsParams()
				require.NoError(t, params.SetSort([]domain.ServerSnapshotSort{
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortServerKeyASC,
				}))
				return params
			},
			args: args{
				sort: nil,
			},
		},
		{
			name: "ERR: custom params + len(sort) > sortMaxLength - len(sort)",
			newParams: func(t *testing.T) domain.ListServerSnapshotsParams {
				t.Helper()
				params := domain.NewListServerSnapshotsParams()
				require.NoError(t, params.SetSort([]domain.ServerSnapshotSort{
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortServerKeyASC,
				}))
				return params
			},
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortDateASC,
				},
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.LenOutOfRangeError{
					Min:     0,
					Max:     1,
					Current: 2,
				},
			},
		},
		{
			name:      "ERR: len(sort) > 3",
			newParams: defaultNewParams,
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortDateASC,
				},
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.LenOutOfRangeError{
					Min:     0,
					Max:     3,
					Current: 4,
				},
			},
		},
		{
			name: "ERR: conflict",
			args: args{
				sort: []domain.ServerSnapshotSort{
					domain.ServerSnapshotSortDateASC,
					domain.ServerSnapshotSortDateDESC,
				},
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.SortConflictError{
					Sort: [2]string{domain.ServerSnapshotSortDateASC.String(), domain.ServerSnapshotSortDateDESC.String()},
				},
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			newParams := defaultNewParams
			if tt.newParams != nil {
				newParams = tt.newParams
			}
			params := newParams(t)

			expectedSort := params.Sort()

			require.ErrorIs(t, params.PrependSort(tt.args.sort), tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, append(tt.args.sort, expectedSort...), params.Sort())
		})
	}
}

func TestListServerSnapshotsParams_PrependSortString(t *testing.T) {
	t.Parallel()

	defaultNewParams := func(t *testing.T) domain.ListServerSnapshotsParams {
		t.Helper()
		return domain.ListServerSnapshotsParams{}
	}
	defaultAllowed := []domain.ServerSnapshotSort{
		domain.ServerSnapshotSortDateASC,
		domain.ServerSnapshotSortDateDESC,
		domain.ServerSnapshotSortIDASC,
		domain.ServerSnapshotSortIDDESC,
		domain.ServerSnapshotSortServerKeyASC,
		domain.ServerSnapshotSortServerKeyDESC,
	}
	defaultMaxLength := 3

	type args struct {
		sort      []string
		allowed   []domain.ServerSnapshotSort
		maxLength int
	}

	tests := []struct {
		name         string
		newParams    func(t *testing.T) domain.ListServerSnapshotsParams
		args         args
		expectedSort []domain.ServerSnapshotSort
		expectedErr  error
	}{
		{
			name: "OK: [id:ASC, date:ASC, serverKey:ASC]",
			args: args{
				sort: []string{
					"id:ASC",
					"date:ASC",
					"serverKey:ASC",
				},
				allowed:   defaultAllowed,
				maxLength: defaultMaxLength,
			},
			expectedSort: []domain.ServerSnapshotSort{
				domain.ServerSnapshotSortIDASC,
				domain.ServerSnapshotSortDateASC,
				domain.ServerSnapshotSortServerKeyASC,
			},
		},
		{
			name: "OK: [id:DESC, date:DESC, serverKey:DESC]",
			args: args{
				sort: []string{
					"id:DESC",
					"date:DESC",
					"serverKey:DESC",
				},
				allowed:   defaultAllowed,
				maxLength: defaultMaxLength,
			},
			expectedSort: []domain.ServerSnapshotSort{
				domain.ServerSnapshotSortIDDESC,
				domain.ServerSnapshotSortDateDESC,
				domain.ServerSnapshotSortServerKeyDESC,
			},
		},
		{
			name: "OK: custom params",
			newParams: func(t *testing.T) domain.ListServerSnapshotsParams {
				t.Helper()
				params := domain.NewListServerSnapshotsParams()
				require.NoError(t, params.SetSort([]domain.ServerSnapshotSort{
					domain.ServerSnapshotSortIDASC,
					domain.ServerSnapshotSortServerKeyASC,
				}))
				return params
			},
			args: args{
				sort: []string{
					"date:ASC",
				},
				allowed:   defaultAllowed,
				maxLength: defaultMaxLength,
			},
			expectedSort: []domain.ServerSnapshotSort{
				domain.ServerSnapshotSortDateASC,
				domain.ServerSnapshotSortIDASC,
				domain.ServerSnapshotSortServerKeyASC,
			},
		},
		{
			name: "OK: empty slice",
			args: args{
				sort: nil,
			},
		},
		{
			name: "ERR: custom params + len(sort) > sortMaxLength - len(sort)",
			newParams: func(t *testing.T) domain.ListServerSnapshotsParams {
				t.Helper()
				params := domain.NewListServerSnapshotsParams()
				require.NoError(t, params.SetSort([]domain.ServerSnapshotSort{
					domain.ServerSnapshotSortServerKeyASC,
					domain.ServerSnapshotSortIDASC,
				}))
				return params
			},
			args: args{
				sort: []string{
					"date:ASC",
					"date:DESC",
				},
				allowed:   defaultAllowed,
				maxLength: defaultMaxLength,
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.LenOutOfRangeError{
					Min:     0,
					Max:     1,
					Current: 2,
				},
			},
		},
		{
			name:      "ERR: len(sort) > maxLength",
			newParams: defaultNewParams,
			args: args{
				sort: []string{
					"serverKey:ASC",
					"date:ASC",
				},
				allowed:   defaultAllowed,
				maxLength: 1,
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.LenOutOfRangeError{
					Min:     0,
					Max:     1,
					Current: 2,
				},
			},
		},
		{
			name:      "ERR: unsupported sort string",
			newParams: defaultNewParams,
			args: args{
				sort: []string{
					"date:",
				},
				allowed:   defaultAllowed,
				maxLength: defaultMaxLength,
			},
			expectedErr: domain.SliceElementValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Index: 0,
				Err: domain.UnsupportedSortStringError{
					Sort: "date:",
				},
			},
		},
		{
			name: "ERR: conflict",
			args: args{
				sort: []string{
					"date:ASC",
					"date:DESC",
				},
				allowed:   defaultAllowed,
				maxLength: defaultMaxLength,
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "sort",
				Err: domain.SortConflictError{
					Sort: [2]string{domain.ServerSnapshotSortDateASC.String(), domain.ServerSnapshotSortDateDESC.String()},
				},
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			newParams := defaultNewParams
			if tt.newParams != nil {
				newParams = tt.newParams
			}
			params := newParams(t)

			require.ErrorIs(t, params.PrependSortString(tt.args.sort, tt.args.allowed, tt.args.maxLength), tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, tt.expectedSort, params.Sort())
		})
	}
}

func TestListServerSnapshotsParams_SetEncodedCursor(t *testing.T) {
	t.Parallel()

	validCursor := domaintest.NewServerSnapshotCursor(t)

	type args struct {
		cursor string
	}

	tests := []struct {
		name           string
		args           args
		expectedCursor domain.ServerSnapshotCursor
		expectedErr    error
	}{
		{
			name: "OK",
			args: args{
				cursor: validCursor.Encode(),
			},
			expectedCursor: validCursor,
		},
		{
			name: "ERR: len(cursor) < 1",
			args: args{
				cursor: "",
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "cursor",
				Err: domain.LenOutOfRangeError{
					Min:     1,
					Max:     1000,
					Current: 0,
				},
			},
		},
		{
			name: "ERR: len(cursor) > 1000",
			args: args{
				cursor: gofakeit.LetterN(1001),
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "cursor",
				Err: domain.LenOutOfRangeError{
					Min:     1,
					Max:     1000,
					Current: 1001,
				},
			},
		},
		{
			name: "ERR: malformed base64",
			args: args{
				cursor: "112345",
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "cursor",
				Err:   domain.ErrInvalidCursor,
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			params := domain.NewListServerSnapshotsParams()

			require.ErrorIs(t, params.SetEncodedCursor(tt.args.cursor), tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, tt.args.cursor, params.Cursor().Encode())
		})
	}
}

func TestListServerSnapshotsParams_SetLimit(t *testing.T) {
	t.Parallel()

	type args struct {
		limit int
	}

	tests := []struct {
		name        string
		args        args
		expectedErr error
	}{
		{
			name: "OK",
			args: args{
				limit: domain.ServerSnapshotListMaxLimit,
			},
		},
		{
			name: "ERR: limit < 1",
			args: args{
				limit: 0,
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "limit",
				Err: domain.MinGreaterEqualError{
					Min:     1,
					Current: 0,
				},
			},
		},
		{
			name: fmt.Sprintf("ERR: limit > %d", domain.ServerSnapshotListMaxLimit),
			args: args{
				limit: domain.ServerSnapshotListMaxLimit + 1,
			},
			expectedErr: domain.ValidationError{
				Model: "ListServerSnapshotsParams",
				Field: "limit",
				Err: domain.MaxLessEqualError{
					Max:     domain.ServerSnapshotListMaxLimit,
					Current: domain.ServerSnapshotListMaxLimit + 1,
				},
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			params := domain.NewListServerSnapshotsParams()

			require.ErrorIs(t, params.SetLimit(tt.args.limit), tt.expectedErr)
			if tt.expectedErr != nil {
				return
			}
			assert.Equal(t, tt.args.limit, params.Limit())
		})
	}
}

func TestNewListServerSnapshotsResult(t *testing.T) {
	t.Parallel()

	snapshots := domain.ServerSnapshots{
		domaintest.NewServerSnapshot(t),
		domaintest.NewServerSnapshot(t),
		domaintest.NewServerSnapshot(t),
	}
	next := domaintest.NewServerSnapshot(t)

	t.Run("OK: with next", func(t *testing.T) {
		t.Parallel()

		res, err := domain.NewListServerSnapshotsResult(snapshots, next)
		require.NoError(t, err)
		assert.Equal(t, snapshots, res.ServerSnapshots())
		assert.Equal(t, snapshots[0].ID(), res.Self().ID())
		assert.Equal(t, snapshots[0].ServerKey(), res.Self().ServerKey())
		assert.Equal(t, snapshots[0].Date(), res.Self().Date())
		assert.Equal(t, next.ID(), res.Next().ID())
		assert.Equal(t, next.ServerKey(), res.Next().ServerKey())
		assert.Equal(t, next.Date(), res.Next().Date())
	})

	t.Run("OK: without next", func(t *testing.T) {
		t.Parallel()

		res, err := domain.NewListServerSnapshotsResult(snapshots, domain.ServerSnapshot{})
		require.NoError(t, err)
		assert.Equal(t, snapshots, res.ServerSnapshots())
		assert.Equal(t, snapshots[0].ID(), res.Self().ID())
		assert.Equal(t, snapshots[0].ServerKey(), res.Self().ServerKey())
		assert.Equal(t, snapshots[0].Date(), res.Self().Date())
		assert.True(t, res.Next().IsZero())
	})

	t.Run("OK: 0 snapshots", func(t *testing.T) {
		t.Parallel()

		res, err := domain.NewListServerSnapshotsResult(nil, domain.ServerSnapshot{})
		require.NoError(t, err)
		assert.Zero(t, res.ServerSnapshots())
		assert.True(t, res.Self().IsZero())
		assert.True(t, res.Next().IsZero())
	})
}