import { resolveGamedataFile } from '@/lib/services/import/core/asset-paths'
import {
  readGamedataJson,
  withGamedataLock,
  writeGamedataJsonAtomic,
} from '@/lib/services/import/core/gamedata-json'
import { siteSettings } from '@/lib/services/site-settings'
import type { EffectMapEntry } from '@/types/effects'

interface EffectMapFile {
  effects: EffectMapEntry[]
}

// Test seam: allows the suite to point the resolver at a temp file.
let pathOverride: string | null = null
export function __setEffectMapPathForTests(p: string | null): void {
  pathOverride = p
}

export async function getEffectMapPath(): Promise<string> {
  if (pathOverride) return pathOverride
  const url = await siteSettings.get('effectmap_url', '/nitro-assets/gamedata/EffectMap.json')
  return resolveGamedataFile(url ?? '/nitro-assets/gamedata/EffectMap.json', 'EffectMap.json')
}

export async function readEffectMap(): Promise<EffectMapFile> {
  const file = await getEffectMapPath()
  const data = await readGamedataJson<Partial<EffectMapFile>>(file)
  return { effects: Array.isArray(data.effects) ? data.effects : [] }
}

export async function listLocalEffects(): Promise<EffectMapEntry[]> {
  return (await readEffectMap()).effects
}

export async function mergeEffect(entry: EffectMapEntry): Promise<void> {
  const file = await getEffectMapPath()
  await withGamedataLock(file, async () => {
    const data = await readGamedataJson<Partial<EffectMapFile>>(file)
    const effects = Array.isArray(data.effects) ? data.effects : []
    const idx = effects.findIndex((e) => e.id === entry.id)
    if (idx >= 0) effects[idx] = entry
    else effects.push(entry)
    await writeGamedataJsonAtomic(file, { ...data, effects })
  })
}

export async function removeEffect(idOrLib: string): Promise<boolean> {
  const file = await getEffectMapPath()
  return withGamedataLock(file, async () => {
    const data = await readGamedataJson<Partial<EffectMapFile>>(file)
    const effects = Array.isArray(data.effects) ? data.effects : []
    const next = effects.filter((e) => e.id !== idOrLib && e.lib !== idOrLib)
    const removed = next.length < effects.length
    if (removed) await writeGamedataJsonAtomic(file, { ...data, effects: next })
    return removed
  })
}