package chat

import (
	"context"
	"slices"

	"github.com/ryanhamamura/c4/db/repository"

	"github.com/rs/zerolog/log"
)

// SaveMessage persists a chat message to the database.
func SaveMessage(queries *repository.Queries, roomID string, msg Message) {
	err := queries.CreateChatMessage(context.Background(), repository.CreateChatMessageParams{
		GameID:    roomID,
		Nickname:  msg.Nickname,
		Color:     int64(msg.Slot),
		Message:   msg.Message,
		CreatedAt: msg.Time,
	})
	if err != nil {
		log.Error().Err(err).Str("room_id", roomID).Msg("failed to save chat message")
	}
}

// LoadMessages loads persisted chat messages for a room, returning them
// in chronological order (oldest first).
func LoadMessages(queries *repository.Queries, roomID string) []Message {
	rows, err := queries.GetChatMessages(context.Background(), roomID)
	if err != nil {
		return nil
	}
	msgs := make([]Message, len(rows))
	for i, r := range rows {
		msgs[i] = Message{
			Nickname: r.Nickname,
			Slot:     int(r.Color),
			Message:  r.Message,
			Time:     r.CreatedAt,
		}
	}
	// DB returns newest-first; reverse for chronological display
	slices.Reverse(msgs)
	return msgs
}