import { composeServerCfg } from './config-compose.js';
import { getBaselineForScope, getVersion, listPromotedOverlaysForScope } from './scripts.js';
import { selectedZombieMap, mapRotation } from './map-aliases.js';

export const MAP_CONFIG_FILE = 'electric_cherry_map.cfg';

/** Loaded after Plutainer's default/main config and before map_rotate. */
export function getServerMapConfig(game: string | null, map: string | null, mapSlug?: string | null): Buffer | null {
    const entry = selectedZombieMap(game, map, mapSlug);
    return entry ? Buffer.from(`// Generated by Electric Cherry from the selected map.\nset sv_maprotation "${mapRotation(entry)}"\n`) : null;
}

/** The promoted config used for first boot and drift reconciliation. */
export function getPromotedServerConfig(game: string | null, map: string | null, mapSlug?: string | null): Buffer | null {
    if (!game) return null;
    const baseline = getBaselineForScope('game', game);
    if (!baseline?.current_version_id) return null;
    const version = getVersion(baseline.current_version_id);
    if (!version) return null;

    const overlays = [
        ...listPromotedOverlaysForScope('game', game),
        ...(map ? listPromotedOverlaysForScope('map', map) : [])
    ].flatMap((overlay) => {
        const current = overlay.current_version_id ? getVersion(overlay.current_version_id) : undefined;
        return current ? [{ id: overlay.id, text: current.content.toString('utf8') }] : [];
    });
    return Buffer.from(composeServerCfg(version.content.toString('utf8'), overlays, game, map, mapSlug), 'utf8');
}