//go:build integration

package social

import (
	"context"
	"github.com/google/uuid"
	"github.com/stretchr/testify/require"
	"os"
	"pipu/api/internal/api/gen"
	"pipu/api/internal/platform/db"
	"sync"
	"testing"
)

func TestSocialIsolationAndLifecycle(t *testing.T) {
	url := os.Getenv("TEST_DATABASE_URL")
	if url == "" {
		t.Skip("TEST_DATABASE_URL is not set")
	}
	ctx := context.Background()
	pool, e := db.Connect(ctx, url)
	require.NoError(t, e)
	defer pool.Close()
	require.NoError(t, db.Migrate(ctx, pool))
	s := &Store{pool: pool}
	a, b, c := uuid.New(), uuid.New(), uuid.New()
	for _, id := range []uuid.UUID{a, b, c} {
		_, e = pool.Exec(ctx, `INSERT INTO users(id,username,password_hash) VALUES($1,$2,'x')`, id, id.String())
		require.NoError(t, e)
	}
	defer pool.Exec(ctx, `DELETE FROM users WHERE id=ANY($1)`, []uuid.UUID{a, b, c})
	action := func(user, peer uuid.UUID, op string) error {
		return s.action(ctx, user, gen.SocialAction{Action: gen.SocialActionAction(op), TargetId: peer})
	}
	require.NoError(t, action(a, b, "request"))
	require.NoError(t, action(a, b, "request"))
	parallel(t, func() error { return action(a, b, "request") })
	inbox, e := s.inbox(ctx, b)
	require.NoError(t, e)
	require.Len(t, inbox.Notifications, 1)
	require.Equal(t, 1, inbox.Unread)
	require.EqualValues(t, "incoming", inbox.People[0].Relationship)
	require.Error(t, action(a, b, "accept"))
	require.Error(t, action(c, b, "accept"))
	_, e = s.send(ctx, a, b, gen.SendDirectMessage{Id: uuid.New(), Text: "before acceptance", AttachmentKind: "none"})
	require.Error(t, e)
	require.NoError(t, action(b, a, "accept"))
	require.NoError(t, action(b, a, "accept"))
	inbox, e = s.inbox(ctx, a)
	require.NoError(t, e)
	require.Len(t, inbox.Notifications, 1)
	require.EqualValues(t, "friend", inbox.People[0].Relationship)
	body := gen.SendDirectMessage{Id: uuid.New(), Text: "Привет", AttachmentKind: "none"}
	m, e := s.send(ctx, a, b, body)
	require.NoError(t, e)
	again, e := s.send(ctx, a, b, body)
	require.NoError(t, e)
	require.Equal(t, m.Seq, again.Seq)
	parallel(t, func() error { _, err := s.send(ctx, a, b, body); return err })
	body.Text = "changed"
	_, e = s.send(ctx, a, b, body)
	require.Error(t, e)
	_, e = s.messages(ctx, c, b, nil)
	require.Error(t, e)
	inbox, e = s.inbox(ctx, b)
	require.NoError(t, e)
	require.Equal(t, 1, inbox.Unread)
	// Another user cannot acknowledge this user's notification.
	require.NoError(t, s.action(ctx, c, gen.SocialAction{Action: "read_notification", TargetId: inbox.Notifications[0].Id}))
	inbox, e = s.inbox(ctx, b)
	require.NoError(t, e)
	require.Equal(t, 1, inbox.Unread)
	second, e := s.send(ctx, a, b, gen.SendDirectMessage{Id: uuid.New(), Text: "Later", AttachmentKind: "none"})
	require.NoError(t, e)
	require.NoError(t, s.action(ctx, b, gen.SocialAction{Action: "read_chat", TargetId: a, UpToSeq: &m.Seq}))
	history, e := s.messages(ctx, a, b, nil)
	require.NoError(t, e)
	require.Len(t, history, 2)
	require.True(t, history[0].Read)
	require.False(t, history[1].Read)
	before, e := s.messages(ctx, b, a, &second.Seq)
	require.NoError(t, e)
	require.Len(t, before, 1)
	require.NoError(t, action(b, a, "block"))
	require.NoError(t, action(a, b, "block"))
	for _, id := range []uuid.UUID{a, b} {
		blocked, err := s.inbox(ctx, id)
		require.NoError(t, err)
		require.Len(t, blocked.People, 1)
		require.EqualValues(t, "blocked", blocked.People[0].Relationship)
	}
	require.NoError(t, action(a, b, "unblock"))
	_, e = s.send(ctx, a, b, gen.SendDirectMessage{Id: uuid.New(), Text: "blocked", AttachmentKind: "none"})
	require.Error(t, e)
	_, e = s.messages(ctx, b, a, nil)
	require.Error(t, e)
	require.Error(t, action(a, b, "request"))
	found, e := s.people(ctx, a, b.String())
	require.NoError(t, e)
	require.Empty(t, found)
	require.NoError(t, action(b, a, "unblock"))
	require.Error(t, action(a, b, "accept"))
	require.NoError(t, action(a, b, "request"))
	require.NoError(t, action(b, a, "accept"))
	require.NoError(t, action(a, b, "remove"))
	_, e = s.messages(ctx, b, a, nil)
	require.Error(t, e)
	// An attachment must reference available catalog music or an active playlist share.
	require.NoError(t, action(a, c, "request"))
	require.NoError(t, action(c, a, "accept"))
	missing := uuid.New()
	_, e = s.send(ctx, a, c, gen.SendDirectMessage{Id: uuid.New(), AttachmentKind: "playlist", AttachmentId: &missing})
	require.Error(t, e)
	playlist, share := uuid.New(), uuid.New()
	_, e = pool.Exec(ctx, `INSERT INTO playlists(id,user_id,name,share_id) VALUES($1,$2,'Music',$3)`, playlist, a, share)
	require.NoError(t, e)
	attachment, e := s.send(ctx, a, c, gen.SendDirectMessage{Id: uuid.New(), AttachmentKind: "playlist", AttachmentId: &share})
	require.NoError(t, e)
	require.Equal(t, &share, attachment.AttachmentId)
	_, e = pool.Exec(ctx, `UPDATE playlists SET share_id=NULL WHERE id=$1`, playlist)
	require.NoError(t, e)
	_, e = s.send(ctx, a, c, gen.SendDirectMessage{Id: uuid.New(), AttachmentKind: "playlist", AttachmentId: &share})
	require.Error(t, e)
	found, e = s.people(ctx, a, "%_")
	require.NoError(t, e)
	require.Empty(t, found)
}

func parallel(t *testing.T, operation func() error) {
	t.Helper()
	var wg sync.WaitGroup
	errors := make(chan error, 8)
	for range 8 {
		wg.Add(1)
		go func() { defer wg.Done(); errors <- operation() }()
	}
	wg.Wait()
	close(errors)
	for err := range errors {
		require.NoError(t, err)
	}
}