package bundb_test

import (
	"context"
	"testing"
	"time"

	"gitea.dwysokinski.me/twhelp/dcbot/internal/bundb"
	"gitea.dwysokinski.me/twhelp/dcbot/internal/domain"
	"github.com/google/uuid"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

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

	if testing.Short() {
		t.Skip("skipping long-running test")
	}

	repo := bundb.NewGroup(newDB(t))

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

		params, err := domain.NewCreateGroupParams(
			"592292203234328587",
			"en",
			"en113",
			"1234",
			"1235",
			true,
			true,
		)
		require.NoError(t, err)

		group, err := repo.Create(context.Background(), params)
		assert.NoError(t, err)
		_, err = uuid.Parse(group.ID)
		assert.NoError(t, err)
		assert.Equal(t, params.ServerID(), group.ServerID)
		assert.Equal(t, params.ServerKey(), group.ServerKey)
		assert.Equal(t, params.VersionCode(), group.VersionCode)
		assert.Equal(t, params.ChannelGains(), group.ChannelGains)
		assert.Equal(t, params.ChannelLosses(), group.ChannelLosses)
		assert.Equal(t, params.Barbarians(), group.Barbarians)
		assert.Equal(t, params.Internals(), group.Internals)
		assert.WithinDuration(t, time.Now(), group.CreatedAt, 1*time.Second)
	})
}

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

	if testing.Short() {
		t.Skip("skipping long-running test")
	}

	db := newDB(t)
	fixture := loadFixtures(t, db)
	repo := bundb.NewGroup(db)
	group := fixture.group(t, "group-1-server-1")

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

		params := domain.UpdateGroupParams{
			ChannelGains: domain.NullString{
				String: group.ChannelGains + "update",
				Valid:  true,
			},
			ChannelLosses: domain.NullString{
				String: group.ChannelLosses + "update",
				Valid:  true,
			},
			Barbarians: domain.NullBool{
				Bool:  !group.Barbarians,
				Valid: true,
			},
			Internals: domain.NullBool{
				Bool:  !group.Internals,
				Valid: true,
			},
		}

		updatedGroup, err := repo.Update(context.Background(), group.ID, group.ServerID, params)
		assert.NoError(t, err)
		assert.Equal(t, params.ChannelGains.String, updatedGroup.ChannelGains)
		assert.Equal(t, params.ChannelLosses.String, updatedGroup.ChannelLosses)
		assert.Equal(t, params.Barbarians.Bool, updatedGroup.Barbarians)
		assert.Equal(t, params.Internals.Bool, updatedGroup.Internals)
	})

	t.Run("ERR: nothing to update", func(t *testing.T) {
		t.Parallel()

		updatedGroup, err := repo.Update(context.Background(), "", "", domain.UpdateGroupParams{})
		assert.ErrorIs(t, err, domain.ErrNothingToUpdate)
		assert.Zero(t, updatedGroup)
	})

	t.Run("ERR: group not found", func(t *testing.T) {
		t.Parallel()

		tests := []struct {
			name     string
			id       string
			serverID string
		}{
			{
				name:     "ID - not UUID",
				id:       "test",
				serverID: group.ServerID,
			},
			{
				name:     "ID - random UUID",
				id:       uuid.NewString(),
				serverID: group.ServerID,
			},
			{
				name:     "ServerID - random UUID",
				id:       group.ID,
				serverID: uuid.NewString(),
			},
		}

		for _, tt := range tests {
			tt := tt

			t.Run(tt.name, func(t *testing.T) {
				t.Parallel()

				updatedGroup, err := repo.Update(context.Background(), tt.id, tt.serverID, domain.UpdateGroupParams{
					ChannelGains: domain.NullString{
						String: "update",
						Valid:  true,
					},
				})
				assert.ErrorIs(t, err, domain.GroupNotFoundError{ID: tt.id})
				assert.Zero(t, updatedGroup)
			})
		}
	})
}

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

	if testing.Short() {
		t.Skip("skipping long-running test")
	}

	db := newDB(t)
	fixture := loadFixtures(t, db)
	repo := bundb.NewGroup(db)
	groups := fixture.groups(t)

	allGroups := make([]string, 0, len(groups))
	for _, g := range groups {
		allGroups = append(allGroups, g.ID)
	}

	tests := []struct {
		name           string
		params         domain.ListGroupsParams
		expectedGroups []string
	}{
		{
			name:           "no params",
			params:         domain.ListGroupsParams{},
			expectedGroups: allGroups,
		},
		{
			name: "ServerIDs=[server-1]",
			params: domain.ListGroupsParams{
				ServerIDs: []string{"server-1"},
			},
			expectedGroups: []string{
				"d56ad37f-2637-48ea-98f8-79627f3fcc96",
				"429b790e-7186-4106-b531-4cc4931ce2ba",
			},
		},
		{
			name: "ServerIDs=[server-1],EnabledNotifications=true",
			params: domain.ListGroupsParams{
				ServerIDs: []string{"server-1"},
				EnabledNotifications: domain.NullBool{
					Bool:  true,
					Valid: true,
				},
			},
			expectedGroups: []string{
				"d56ad37f-2637-48ea-98f8-79627f3fcc96",
				"429b790e-7186-4106-b531-4cc4931ce2ba",
			},
		},
		{
			name: "ServerIDs=[server-2],EnabledNotifications=true",
			params: domain.ListGroupsParams{
				ServerIDs: []string{"server-2"},
				EnabledNotifications: domain.NullBool{
					Bool:  true,
					Valid: true,
				},
			},
			expectedGroups: []string{
				"0be82203-4ca3-4b4c-a0c8-3a70099d88f7",
			},
		},
		{
			name: "ServerIDs=[server-2],EnabledNotifications=false",
			params: domain.ListGroupsParams{
				ServerIDs: []string{"server-2"},
				EnabledNotifications: domain.NullBool{
					Bool:  false,
					Valid: true,
				},
			},
			expectedGroups: []string{
				"abeb6c8e-70b6-445c-989f-890cd2a1f87a",
			},
		},
		{
			name: "VersionCode=pl",
			params: domain.ListGroupsParams{
				VersionCode: domain.NullString{
					String: "pl",
					Valid:  true,
				},
			},
			expectedGroups: []string{
				"d56ad37f-2637-48ea-98f8-79627f3fcc96",
				"429b790e-7186-4106-b531-4cc4931ce2ba",
				"abeb6c8e-70b6-445c-989f-890cd2a1f87a",
				"0be82203-4ca3-4b4c-a0c8-3a70099d88f7",
				"982a9765-471c-43e8-9abb-1e4ee4f03738",
			},
		},
		{
			name: "VersionCode=pl,ServerKeys=[pl180]",
			params: domain.ListGroupsParams{
				VersionCode: domain.NullString{
					String: "pl",
					Valid:  true,
				},
				ServerKeys: []string{"pl180"},
			},
			expectedGroups: []string{
				"982a9765-471c-43e8-9abb-1e4ee4f03738",
			},
		},
		{
			name: "CreatedAtLTE=2022-03-15T15:00:10.000Z",
			params: domain.ListGroupsParams{
				CreatedAtLTE: time.Date(2022, time.March, 15, 15, 00, 10, 0, time.UTC),
			},
			expectedGroups: []string{
				"d56ad37f-2637-48ea-98f8-79627f3fcc96",
			},
		},
	}

	for _, tt := range tests {
		tt := tt

		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()

			res, err := repo.List(context.Background(), tt.params)
			assert.NoError(t, err)
			assert.Len(t, res, len(tt.expectedGroups))
			for _, id := range tt.expectedGroups {
				found := false
				for _, grp := range res {
					if grp.ID == id {
						found = true
						break
					}
				}
				assert.True(t, found, "group (id=%s) not found", id)
			}
		})
	}
}

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

	if testing.Short() {
		t.Skip("skipping long-running test")
	}

	db := newDB(t)
	fixture := loadFixtures(t, db)
	repo := bundb.NewGroup(db)
	group := fixture.group(t, "group-1-server-1")

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

		g, err := repo.Get(context.Background(), group.ID, group.ServerID)
		assert.NoError(t, err)
		assert.Equal(t, group, g)
	})

	t.Run("ERR: group not found (unknown ID)", func(t *testing.T) {
		t.Parallel()

		tests := []struct {
			name     string
			id       string
			serverID string
		}{
			{
				name:     "ID - not UUID",
				id:       "test",
				serverID: group.ServerID,
			},
			{
				name:     "ID - random UUID",
				id:       uuid.NewString(),
				serverID: group.ServerID,
			},
			{
				name:     "ServerID - random UUID",
				id:       group.ID,
				serverID: uuid.NewString(),
			},
		}

		for _, tt := range tests {
			tt := tt

			t.Run(tt.name, func(t *testing.T) {
				t.Parallel()

				g, err := repo.Get(context.Background(), tt.id, tt.serverID)
				assert.ErrorIs(t, err, domain.GroupNotFoundError{ID: tt.id})
				assert.Zero(t, g)
			})
		}
	})
}

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

	if testing.Short() {
		t.Skip("skipping long-running test")
	}

	db := newDB(t)
	fixture := loadFixtures(t, db)
	groupRepo := bundb.NewGroup(db)
	monitorRepo := bundb.NewMonitor(db)
	group := fixture.group(t, "group-1-server-1")

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

		beforeDelete, err := groupRepo.List(context.Background(), domain.ListGroupsParams{
			ServerIDs: []string{group.ServerID},
		})
		assert.NoError(t, err)

		assert.NoError(t, groupRepo.Delete(context.Background(), group.ID, group.ServerID))

		afterDelete, err := groupRepo.List(context.Background(), domain.ListGroupsParams{
			ServerIDs: []string{group.ServerID},
		})
		assert.NoError(t, err)
		assert.Len(t, afterDelete, len(beforeDelete)-1)

		// monitors should also be deleted
		monitors, err := monitorRepo.List(context.Background(), group.ID)
		assert.NoError(t, err)
		assert.Len(t, monitors, 0)
	})

	t.Run("ERR: group not found", func(t *testing.T) {
		t.Parallel()

		tests := []struct {
			name     string
			id       string
			serverID string
		}{
			{
				name:     "ID - not UUID",
				id:       "test",
				serverID: group.ServerID,
			},
			{
				name:     "ID - random UUID",
				id:       uuid.NewString(),
				serverID: group.ServerID,
			},
			{
				name:     "ServerID - random UUID",
				id:       group.ID,
				serverID: uuid.NewString(),
			},
		}

		for _, tt := range tests {
			tt := tt

			t.Run(tt.name, func(t *testing.T) {
				t.Parallel()

				assert.ErrorIs(
					t,
					groupRepo.Delete(context.Background(), tt.id, tt.serverID),
					domain.GroupNotFoundError{ID: tt.id},
				)
			})
		}
	})
}

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

	if testing.Short() {
		t.Skip("skipping long-running test")
	}

	db := newDB(t)
	fixture := loadFixtures(t, db)
	groupRepo := bundb.NewGroup(db)
	monitorRepo := bundb.NewMonitor(db)
	group1 := fixture.group(t, "group-1-server-1")
	group2 := fixture.group(t, "group-2-server-1")
	ids := []string{group1.ID, group2.ID}
	serverIDs := []string{group1.ServerID}

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

		beforeDelete, err := groupRepo.List(context.Background(), domain.ListGroupsParams{
			ServerIDs: serverIDs,
		})
		assert.NoError(t, err)

		assert.NoError(t, groupRepo.DeleteMany(context.Background(), ids...))

		afterDelete, err := groupRepo.List(context.Background(), domain.ListGroupsParams{
			ServerIDs: serverIDs,
		})
		assert.NoError(t, err)
		assert.Len(t, afterDelete, len(beforeDelete)-len(ids))

		// monitors should also be deleted
		for _, id := range ids {
			monitors, err := monitorRepo.List(context.Background(), id)
			assert.NoError(t, err)
			assert.Len(t, monitors, 0)
		}
	})

	t.Run("OK: 0 ids", func(t *testing.T) {
		t.Parallel()
		assert.NoError(t, groupRepo.DeleteMany(context.Background()))
	})
}