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 TestMonitor_Create(t *testing.T) {
	t.Parallel()

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

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

		group := getGroupFromFixture(t, fixture, "group-1-server-1")

		params, err := domain.NewCreateMonitorParams(group.ID.String(), 1234)
		require.Zero(t, err)

		monitor, err := repo.Create(context.Background(), params)
		assert.NoError(t, err)
		_, err = uuid.Parse(monitor.ID)
		assert.NoError(t, err)
		assert.Equal(t, params.GroupID(), monitor.GroupID)
		assert.Equal(t, params.TribeID(), monitor.TribeID)
		assert.WithinDuration(t, time.Now(), monitor.CreatedAt, 1*time.Second)

		// check unique index
		monitor, err = repo.Create(context.Background(), params)
		assert.ErrorIs(t, err, domain.MonitorAlreadyExistsError{
			TribeID: params.TribeID(),
			GroupID: params.GroupID(),
		})
		assert.Zero(t, monitor)
	})

	t.Run("ERR: group doesn't exist", func(t *testing.T) {
		t.Parallel()

		t.Run("foreign key violation", func(t *testing.T) {
			t.Parallel()

			groupID := uuid.NewString()
			params, err := domain.NewCreateMonitorParams(groupID, 1234)
			require.Zero(t, err)

			monitor, err := repo.Create(context.Background(), params)
			assert.ErrorIs(t, err, domain.GroupDoesNotExistError{
				ID: groupID,
			})
			assert.Zero(t, monitor)
		})

		t.Run("not UUID", func(t *testing.T) {
			t.Parallel()

			groupID := "592292203234328587"
			params, err := domain.NewCreateMonitorParams(groupID, 1234)
			require.Zero(t, err)

			monitor, err := repo.Create(context.Background(), params)
			assert.ErrorIs(t, err, domain.GroupDoesNotExistError{
				ID: groupID,
			})
			assert.Zero(t, monitor)
		})
	})
}

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

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

	tests := []struct {
		name             string
		groupID          string
		expectedMonitors []string
	}{
		{
			name:    "group-1-server-1",
			groupID: getGroupFromFixture(t, fixture, "group-1-server-1").ID.String(),
			expectedMonitors: []string{
				"e3017ba8-4fba-4bb1-ac8d-e4e9477a04d2",
				"89719460-58ab-46b8-8682-46f161546949",
			},
		},
		{
			name:    "group-2-server-2",
			groupID: getGroupFromFixture(t, fixture, "group-2-server-2").ID.String(),
			expectedMonitors: []string{
				"c7d63c3d-55f6-432e-b9d8-006f8c5ab407",
			},
		},
		{
			name:             "random UUID",
			groupID:          uuid.NewString(),
			expectedMonitors: nil,
		},
		{
			name:             "not UUID",
			groupID:          "test",
			expectedMonitors: nil,
		},
	}

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

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

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

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

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

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

		monitors, err := repo.List(context.Background(), group.ID.String())
		require.NoError(t, err)
		require.Greater(t, len(monitors), 0)

		m, err := repo.Get(context.Background(), monitors[0].ID)
		assert.NoError(t, err)
		assert.Equal(t, monitors[0], m)
	})

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

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

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

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

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

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

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

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

		beforeDelete, err := repo.List(context.Background(), group.ID.String())
		assert.NoError(t, err)
		assert.Greater(t, len(beforeDelete), 0)

		assert.NoError(t, repo.Delete(context.Background(), beforeDelete[0].ID))

		afterDelete, err := repo.List(context.Background(), group.ID.String())
		assert.NoError(t, err)
		assert.Len(t, afterDelete, len(beforeDelete)-1)
	})

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

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

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

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

				assert.ErrorIs(
					t,
					repo.Delete(context.Background(), tt.id),
					domain.MonitorNotFoundError{ID: tt.id},
				)
			})
		}
	})
}