import { relative, sep } from 'node:path'
import fsd from '@feature-sliced/steiger-plugin'
import { defineConfig } from 'steiger'

// Steiger is the official FSD linter: `bun run lint:fsd`.

// 细粒度拆分是有意的架构决策：以下 feature 切片职责边界互斥、各自稳定，
// 当前仅被 pages/workspace 消费，insignificant-slice 会对它们误报。
// 豁免采用「包装规则 + 过滤诊断」而非 files-scoped off —— 后者会把切片
// 从规则的分析输入中整体移除，导致 entities 的消费边丢失而产生连锁误报。
// 这里保留完整引用分析，只对清单内的切片丢弃报警：规则对新切片仍然生效。
// 本清单应随架构演进同步修剪（切片被第二个消费者使用，或删除后记得移除）。
const INSIGNIFICANT_SLICE_ALLOWLIST = new Set([
  'entities/search',
  'features/chat',
  'features/issue-board',
  'features/notifications',
  'features/pull-request',
  'features/repo-branches',
  'features/repo-browse',
  'features/repo-history',
  'features/repo-settings',
  'features/repo-releases',
  'features/search',
  'features/space-discovery',
  'features/space-management',
  'features/user-settings',
])

// 插件内部用 path.join() 拼路径：Windows 下 relative() 产出 `features\\chat`，/ 分隔的清单会静默失效。
// 统一归一化为 POSIX 分隔符再比对，保证跨平台行为一致。
const toPosixPath = (value) => value.split(sep).join('/')

const GUARDED_RULE_NAME = 'project/insignificant-slice'
const officialSliceRule = fsd.plugin.ruleDefinitions.find(({ name }) => name === 'fsd/insignificant-slice')

const guardedPlugin = {
  ...fsd.plugin,
  meta: { name: 'fsd-with-allowlist', version: fsd.plugin.meta.version },
  ruleDefinitions: fsd.plugin.ruleDefinitions.map((rule) =>
    rule === officialSliceRule
      ? {
          name: GUARDED_RULE_NAME,
          async check(root, options) {
            const { diagnostics } = await officialSliceRule.check(root, options)
            return {
              diagnostics: diagnostics.filter(
                ({ location }) =>
                  !INSIGNIFICANT_SLICE_ALLOWLIST.has(toPosixPath(relative(root.path, location.path))),
              ),
            }
          },
        }
      : rule,
  ),
}

const renameGuardedRule = (configEntry) =>
  configEntry.rules?.['fsd/insignificant-slice'] === undefined
    ? configEntry
    : (() => {
        const { ['fsd/insignificant-slice']: severity, ...restRules } = configEntry.rules
        return { ...configEntry, rules: { ...restRules, [GUARDED_RULE_NAME]: severity } }
      })()

export default defineConfig([
  guardedPlugin,
  // recommended 首项携带原始 plugin，换成 guardedPlugin 后需剔除，避免同名规则冲突。
  ...fsd.configs.recommended.filter((entry) => !('ruleDefinitions' in entry)).map(renameGuardedRule),
  {
    ignores: [
      '**/node_modules/**',
      '**/dist/**',
      'src/shared/api/**', // auto-generated by `bun run gen:api`
      'src/shared/livekit/**', // vendored @livekit/components-react|core|styles
    ],
  },
])