//go:build integration

package inttest

import (
	"context"
	"testing"

	"github.com/google/uuid"

	"scrabble/backend/internal/social"
)

// TestChatUnreadAndMarkRead checks a text message marks every recipient seat unread (not the
// sender), surfaces through HasUnread / UnreadGames, and that MarkRead clears the reader's bit.
func TestChatUnreadAndMarkRead(t *testing.T) {
	ctx := context.Background()
	svc := newSocialService()
	gameID, seats := newGameWithSeats(t, 2) // seat 0 is to move

	if _, err := svc.PostMessage(ctx, gameID, seats[0], "good luck", ""); err != nil {
		t.Fatalf("post: %v", err)
	}
	// The opponent has it unread; the sender does not.
	if unread, _ := svc.HasUnread(ctx, gameID, seats[1]); !unread {
		t.Error("recipient should have the message unread")
	}
	if unread, _ := svc.HasUnread(ctx, gameID, seats[0]); unread {
		t.Error("sender should not have their own message unread")
	}
	if set, err := svc.UnreadGames(ctx, seats[1]); err != nil {
		t.Fatalf("unread games: %v", err)
	} else if !set[gameID] {
		t.Error("UnreadGames should include the game for the recipient")
	}

	// Reading it clears the recipient's bit and reports one entry marked.
	if n, err := svc.MarkRead(ctx, gameID, seats[1]); err != nil {
		t.Fatalf("mark read: %v", err)
	} else if n != 1 {
		t.Errorf("marked %d, want 1", n)
	}
	if unread, _ := svc.HasUnread(ctx, gameID, seats[1]); unread {
		t.Error("message should be read after MarkRead")
	}
	// A second MarkRead is a no-op — nothing is left unread.
	if n, _ := svc.MarkRead(ctx, gameID, seats[1]); n != 0 {
		t.Errorf("second mark read marked %d, want 0", n)
	}
}

// TestNudgeUnreadTargetsOnlyToMove checks, in a three-player game, that a nudge marks ONLY the
// awaited (to-move) seat unread — never the other waiting players. This is the owner's nudge
// targeting invariant, now observable through the unread bitmask.
func TestNudgeUnreadTargetsOnlyToMove(t *testing.T) {
	ctx := context.Background()
	svc := newSocialService()
	gameID, seats := newGameWithSeats(t, 3) // seat 0 is to move

	// A waiting player nudges; only the awaited seat 0 is targeted.
	if _, err := svc.Nudge(ctx, gameID, seats[1]); err != nil {
		t.Fatalf("nudge: %v", err)
	}
	if unread, _ := svc.HasUnread(ctx, gameID, seats[0]); !unread {
		t.Error("the awaited seat should have the nudge unread")
	}
	if unread, _ := svc.HasUnread(ctx, gameID, seats[2]); unread {
		t.Error("a non-awaited waiting seat must not receive the nudge")
	}
	if unread, _ := svc.HasUnread(ctx, gameID, seats[1]); unread {
		t.Error("the nudging sender must not have it unread")
	}
}

// TestTextMessageUnreadReachesAllOpponents checks a text message in a three-player game marks both
// opponents (every seated player but the sender) unread.
func TestTextMessageUnreadReachesAllOpponents(t *testing.T) {
	ctx := context.Background()
	svc := newSocialService()
	gameID, seats := newGameWithSeats(t, 3) // seat 0 is to move and may chat

	if _, err := svc.PostMessage(ctx, gameID, seats[0], "hello all", ""); err != nil {
		t.Fatalf("post: %v", err)
	}
	for _, s := range []int{1, 2} {
		if unread, _ := svc.HasUnread(ctx, gameID, seats[s]); !unread {
			t.Errorf("seat %d should have the text message unread", s)
		}
	}
	if unread, _ := svc.HasUnread(ctx, gameID, seats[0]); unread {
		t.Error("the sender should not have their own message unread")
	}
}

// TestNudgeClearedByMove checks the move path clears a nudge the actor answered by moving: the
// game service's wired NudgeClearer flips the awaited seat's nudge to read on commit.
func TestNudgeClearedByMove(t *testing.T) {
	ctx := context.Background()
	gameSvc, gameID, seats, play := newDraftGame(t)
	socialSvc := newSocialService()
	gameSvc.SetNudgeClearer(socialSvc.ClearNudges)

	// The waiting seat 1 nudges the to-move seat 0.
	if _, err := socialSvc.Nudge(ctx, gameID, seats[1]); err != nil {
		t.Fatalf("nudge: %v", err)
	}
	if unread, _ := socialSvc.HasUnread(ctx, gameID, seats[0]); !unread {
		t.Fatal("seat 0 should have the nudge unread before moving")
	}
	// Seat 0 answers by moving — the commit clears its pending nudge.
	if _, err := gameSvc.SubmitPlay(ctx, gameID, seats[0], play.Tiles); err != nil {
		t.Fatalf("submit play: %v", err)
	}
	if unread, _ := socialSvc.HasUnread(ctx, gameID, seats[0]); unread {
		t.Error("the nudge should be cleared once the awaited player has moved")
	}
}

// TestAdminChatUnreadFilterAndDetail checks the admin unread-only filter and the per-seat read
// breakdown of the message card.
func TestAdminChatUnreadFilterAndDetail(t *testing.T) {
	ctx := context.Background()
	svc := newSocialService()
	gameID, seats := newGameWithSeats(t, 2)

	msg, err := svc.PostMessage(ctx, gameID, seats[0], "good luck", "")
	if err != nil {
		t.Fatalf("post: %v", err)
	}
	// The unread-only filter (scoped to the game) lists the still-unread message.
	if items, err := svc.AdminListMessages(ctx, social.AdminMessageFilter{GameID: gameID, UnreadOnly: true}, 50, 0); err != nil {
		t.Fatalf("admin list: %v", err)
	} else if len(items) != 1 || items[0].ID != msg.ID {
		t.Fatalf("unread filter = %+v, want the one message", items)
	}
	// The detail card marks the sender 'sender' and the recipient 'unread'.
	card, err := svc.AdminMessageDetail(ctx, msg.ID)
	if err != nil {
		t.Fatalf("detail: %v", err)
	}
	roles := map[uuid.UUID]string{}
	for _, s := range card.Seats {
		roles[s.AccountID] = s.Role
	}
	if roles[seats[0]] != "sender" {
		t.Errorf("sender role = %q, want sender", roles[seats[0]])
	}
	if roles[seats[1]] != "unread" {
		t.Errorf("recipient role = %q, want unread", roles[seats[1]])
	}

	// After the recipient reads, the filter drops it and the seat flips to 'read'.
	if _, err := svc.MarkRead(ctx, gameID, seats[1]); err != nil {
		t.Fatalf("mark read: %v", err)
	}
	if items, _ := svc.AdminListMessages(ctx, social.AdminMessageFilter{GameID: gameID, UnreadOnly: true}, 50, 0); len(items) != 0 {
		t.Errorf("unread filter should be empty after read, got %d", len(items))
	}
	card2, err := svc.AdminMessageDetail(ctx, msg.ID)
	if err != nil {
		t.Fatalf("detail after read: %v", err)
	}
	for _, s := range card2.Seats {
		if s.AccountID == seats[1] && s.Role != "read" {
			t.Errorf("recipient role after read = %q, want read", s.Role)
		}
	}
}