// Codex 技能的展示 ID 与按 Profile 选择（与 Claude 侧的 providers/claude/skills.ts 对应）
import fs from 'node:fs'
import path from 'node:path'
import { COMMUNITY_SKILL_PLUGIN, CUSTOM_SKILL_PLUGIN } from '@agent-server/shared'
import type { SkillMetadata } from './protocol/v2'
import { NO_CODEX_PLUGINS, type CodexPluginGrant } from '../types'

/** 服务场景下始终禁用的系统技能：会联网下载或写入 Codex 自身目录 */
export const ALWAYS_DISABLED = new Set(['skill-installer', 'skill-creator', 'plugin-creator'])

/**
 * 展示 ID：
 * - 系统技能 → codex-system:<name>
 * - 从 openai/skills 安装的技能（CODEX_HOME/skills 下有标记文件）→ openai-skills:<name>
 * - 本地技能目录与第三方技能目录（extraRoots，Codex 按 plugin.json 加了前缀）→ 原样，如 agent-skills:report-conventions
 * - 其他用户技能 → codex-user:<name>
 */
export function skillDisplayId(s: Pick<SkillMetadata, 'name' | 'scope' | 'path'>, codexHome: string): string {
  if (s.scope === 'system') return `codex-system:${s.name}`
  // Codex 用 SKILL.md 的 name 命名（可能是 "Excel Analysis"），Claude 用目录名；第三方技能统一按目录名，两个引擎 ID 一致
  for (const plugin of [COMMUNITY_SKILL_PLUGIN, CUSTOM_SKILL_PLUGIN]) {
    if (s.name.startsWith(`${plugin}:`)) return `${plugin}:${path.basename(path.dirname(s.path))}`
  }
  if (s.name.includes(':')) return s.name
  const managedRoot = path.join(codexHome, 'skills')
  const dir = path.dirname(s.path)
  if (path.dirname(dir) === managedRoot && fs.existsSync(path.join(dir, '.agent-server.json'))) return `openai-skills:${s.name}`
  return `codex-user:${s.name}`
}

/**
 * 计算需要在本次对话中禁用的技能（按路径选择）；选择"全部技能"时第三方技能仍需单独勾选。
 * 远程插件带来的技能（pluginId 非空）跟随插件授权：全部开放时（Playground）全部保留，否则只保留开放的插件的技能
 */
export function skillsToDisable(
  all: SkillMetadata[], selected: string[] | 'all', codexHome: string, localPlugin: string, plugins: CodexPluginGrant = NO_CODEX_PLUGINS, excludedFromAll: string[] = [],
): { path: string; enabled: false }[] {
  const excluded = new Set(excludedFromAll)
  const wanted = selected === 'all' ? null : new Set(selected.map(s => (s.includes(':') ? s : `${localPlugin}:${s}`)))
  return all
    .filter(s => {
      if (ALWAYS_DISABLED.has(s.name)) return true
      if (s.pluginId) return plugins !== 'all' && !plugins.pluginIds.includes(s.pluginId)
      const id = skillDisplayId(s, codexHome)
      return wanted === null ? id.startsWith(`${COMMUNITY_SKILL_PLUGIN}:`) || excluded.has(id) : !wanted.has(id)
    })
    .map(s => ({ path: s.path, enabled: false as const }))
}