import { getVersionContent } from './scripts.js';
import { composeServerCfg } from './config-compose.js';
import { getBaselineForScope, getVersion, listPromotedOverlaysForScope } from './scripts.js';
import { selectedZombieMap, mapRotation } from './map-aliases.js';
import { applyRuntimePassword } from './runtime-config.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,
    rconPassword?: 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: getVersionContent(current.id).toString('utf8') }]
            : [];
    });
    return Buffer.from(
        applyRuntimePassword(
            composeServerCfg(
                getVersionContent(version.id).toString('utf8'),
                overlays,
                game,
                map,
                mapSlug
            ),
            rconPassword
        ),
        'utf8'
    );
}