import { resolveGordonBuildUrl } from '@/lib/services/import/core/gordon'
import { siteSettings } from '@/lib/services/site-settings'
import type { EffectMapEntry } from '@/types/effects'

// Defaults to VALIDATE against a live fetch (spec Open Item #2). Override the
// SWF source with the `effect_swf_base_url` site setting if these drift.
const OFFICIAL_EFFECTMAP_URL = 'https://www.habbo.com/gamedata/effectmap/1'
const CACHE_TTL = 30 * 60 * 1000

let effectCache: { list: EffectMapEntry[]; ts: number } | null = null

export function __clearEffectSourceCache(): void {
  effectCache = null
}

function parseEffectMapXml(xml: string): EffectMapEntry[] {
  const out: EffectMapEntry[] = []
  const re = /<effect\b([^>]*)\/?>/g
  for (const m of xml.matchAll(re)) {
    const attrs = m[1]
    const id = /\bid="([^"]*)"/.exec(attrs)?.[1]
    const lib = /\blib="([^"]*)"/.exec(attrs)?.[1]
    const type = /\btype="([^"]*)"/.exec(attrs)?.[1] ?? 'fx'
    const revision = Number(/\brevision="([^"]*)"/.exec(attrs)?.[1] ?? '0')
    if (id && lib) out.push({ id, lib, type, revision: Number.isFinite(revision) ? revision : 0 })
  }
  return out
}

export async function listOfficialEffects(): Promise<EffectMapEntry[]> {
  const now = Date.now()
  if (effectCache && now - effectCache.ts < CACHE_TTL) return effectCache.list
  const res = await fetch(OFFICIAL_EFFECTMAP_URL, { signal: AbortSignal.timeout(20000) })
  if (!res.ok) {
    console.warn(`[effect-source] effectmap fetch failed: ${res.status}`)
    return effectCache?.list ?? []
  }
  const list = parseEffectMapXml(await res.text())
  effectCache = { list, ts: now }
  return list
}

export async function resolveEffectSwfUrl(lib: string): Promise<string> {
  const override = ((await siteSettings.get('effect_swf_base_url', '')) ?? '').trim()
  if (override) return `${override.replace(/\/+$/, '')}/${lib}.swf`
  const gordon = await resolveGordonBuildUrl()
  return `${gordon}${lib}.swf`
}