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3x-ui/CLAUDE.md
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Sanaei 5321665d5b feat(ci): give the review bot a severity scale and a tally 
REVIEW.md said what blocks and what does not, but never how to mark a finding,
so every review invented its own shape and none carried a severity. It now
names the three markers the hosted Code Review service uses - Important, Nit,
Pre-existing - and keys them to what the pull request did rather than to how
alarming a defect looks alone: a defect it introduces or worsens is Important,
one it merely brought into view is Pre-existing and cannot be a reason to hold
it. Pre-existing was missing entirely, and checking what this panel emits means
reading far outside the diff, so those findings had nowhere to go except a
wrong Important or silence.

The volume cap said how many and never which. It now collapses a nit repeated
across files into one finding, prefers a nit in code the pull request wrote
over one in code it only moved, caps pre-existing findings at three, and states
that Important findings are never capped - a section listing two caps otherwise
reads as licence to trim what matters. The review opens with a tally so the
author sees the shape before the detail.

Two contradictions went with it. The file told the reviewer to skip what CI
enforces and then to check that a new i18n key reaches all 13 locales, which
i18n-dead-keys.test.ts pins in both directions - the rule moves to "Do not
report" with the reason. "Anything CI already enforces: npm audit" overstated
what runs; CI audits production dependencies at high and above, so a
dev-dependency advisory is out of scope by design.

The reviewer could not read its own CI. Only postgres-durable-first runs
against PostgreSQL, and XRAY_E2E_BINARY and XUI_SCALE_TEST are set by no job,
so a dialect or migration change can carry a wall of green while the paths it
touches never executed. That belongs to the verification bar, next to the rule
that a behaviour claim needs a file:line citation, and "CI passed" now needs a
run actually read. Also names the two house choices no linter defends: neither
golangci-lint nor oxlint rejects a testify or Tailwind import.

Both kinds of claim rot on a rename, so a test pins them the way
repo-context.md's claims are already pinned - the CI jobs REVIEW.md names must
exist in ci.yml, the skip gates it calls unset must stay unset, and the locale
count must match the directory.

The review itself moves from high to max effort, and the prompt records why it
names REVIEW.md at all: the code-review skill reads CLAUDE.md on its own but
not REVIEW.md, so dropping that clause would silently stop the file applying.
Drops a CLAUDE.md reference to tools/seedperf/, which no longer exists - the
review reads that file as project context, so a stale path there misleads it.
2026-08-21 03:37:12 +02:00

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CLAUDE.md

Operational guide for AI agents working in this repo. Long-form human docs: CONTRIBUTING.md (setup, testing philosophy) and frontend/README.md. Read those before large changes. This file is the short, must-follow version. For a deep navigation map (request lifecycle, cron-job table, symptom → file index, layering rules), read docs/architecture.md on demand — do not guess file locations when it can answer in one hop.

Stack

  • Backend: Go 1.26 (module github.com/mhsanaei/3x-ui/v3), Gin, GORM. Runs Xray-core as a managed child process (internal/xray/process.go) and imports github.com/xtls/xray-core for config types + gRPC stats/handler/router API. MTProto inbounds run a second managed child — the mtg-multi binary (a multi-secret mtg fork — NOT a Go dependency; its prebuilt release binary is fetched at image/release build time by DockerInit.sh + release.yml, panel-side code in internal/mtproto/) — outside Xray, one process per inbound serving each client's FakeTLS secret via the fork's [secrets] section (plus per-client ad-tags via [secret-ad-tags] and per-client data quota / expiry via [secret-limits], mapped from the client's totalGB/expiryTime). Client, ad-tag and quota/expiry edits are hot-applied through the fork's management API (PUT /secrets, bearer-token guarded) so connections survive; the manager falls back to a process restart on older binaries. A client's panel-side traffic reset also calls POST /secrets/{name}/reset-quota so a renewed client is not re-blocked by the sidecar's quota counter.
  • Storage: SQLite by default (/etc/x-ui/x-ui.db on Linux; the executable dir on Windows), PostgreSQL optional (XUI_DB_TYPE / XUI_DB_DSN). The CGo SQLite driver (mattn/go-sqlite3) needs a C compiler — CGO_ENABLED=0 builds fail.
  • Frontend: React 19 + Ant Design 6 + Vite 8 + TypeScript in frontend/, built into internal/web/dist/ (gitignored) and embedded via embed.FS.

Repo map

  • main.go — entry point + x-ui CLI (run, migrate, migrate-db, setting, cert).
  • internal/config/ — env parsing (XUI_DEBUG, XUI_LOG_LEVEL, XUI_LOG_FOLDER, XUI_BIN_FOLDER, XUI_SKIP_HSTS, XUI_PORT, XUI_DB_*).
  • internal/database/ + internal/database/model/ — GORM schema (~24 models; Inbound, Client, Setting, User are the core), inbound Protocol enum, AutoMigrate + hand-written migrations in db.go.
  • internal/xray/ — Xray child-process lifecycle, config generation, gRPC API.
  • internal/xray/geodata/ — streaming geosite/geoip .dat reader (cached category index + paged entries) and geosite:/geoip:/ext: token parsing.
  • internal/mtproto/ — MTProto inbounds via the bundled mtg-multi binary.
  • internal/sub/ — subscription server (raw / JSON / Clash).
  • internal/eventbus/ — in-process pub/sub (outbound/node health, xray.crash, cpu.high, memory.high, login.attempt).
  • internal/logger/, internal/util/ (link, crypto, sys, ldap, …), internal/tunnelmonitor/ — shared infrastructure.
  • internal/web/ — Gin server (embeds dist/ + translation/).
    • controller/ — panel + REST API handlers; OpenAPI at /panel/api/openapi.json.
    • service/ — business logic (InboundService, SettingService, XrayService, node sync); subpackages tgbot/, email/, outbound/, panel/, integration/.
    • job/ — 17 cron jobs (traffic, fail2ban IP-limit, node heartbeat/sync, LDAP, CPU/memory watchdogs, …); full table in docs/architecture.md §5.4.
    • middleware/, entity/, global/, session/ (CSRF), network/, runtime/ (master/sub-node over mTLS), websocket/.
    • locale/ + translation/ — i18n, 13 embedded locale JSON files.
  • frontend/ — React + TS source (see frontend/CLAUDE.md).
  • tools/openapigen/ — Go generator that emits frontend types + Zod/JSON schemas into frontend/src/generated/ from Go structs. The OpenAPI doc itself (frontend/public/openapi.json) is assembled from those + endpoints.ts by frontend/scripts/build-openapi.mjs.
  • docs/ — separate Next.js/Fumadocs site (pnpm, own CI in docs-ci.yml, outside make verify). Holds a THIRD independent implementation of link/subscription generation in docs/lib/xray/ — check it whenever share-link or install-command output changes.

Hard rules (non-negotiable)

  • Fix size must match bug size. Find the root cause, then make the SMALLEST change that removes it — a one-line guard beats a new subsystem. A small bug does not earn new columns, jobs, abstractions, config knobs or helper layers. If a fix genuinely needs new architecture, say so and get agreement first; never ship it unasked next to the fix.
  • Comments in committed Go/TS: 2 lines MAX per comment block. Make the name carry the meaning first and rename rather than annotate; spend the 2 lines on the why a name cannot hold — an invariant, an issue number, a non-obvious constraint. Exempt: //go:build, //go:generate, and other directives. HTML <!-- --> is fine. (A linter cannot enforce this — you must.)
  • New g.POST/g.GET in internal/web/controller/ REQUIRES a matching entry in frontend/src/pages/api-docs/endpoints.ts, then make gen (or cd frontend && npm run gen). Hand-maintained but pinned both ways by TestRouteRegistryContract (internal/web/routes_contract_test.go): a missing OR stale entry fails make test-go. Scope: /panel/api/* + a few session routes; sub-server routes are exempt.
  • Response examples come from Go struct example: tags via tools/openapigen — never hand-write them. A new struct must be added to openapigen's StructAllow allowlist (tools/openapigen/main.go) or it is silently omitted from schemas/examples (and build-openapi.mjs then fails on the missing schema).
  • A new or renamed endpoint has a FOURTH step nothing checks: copy frontend/public/openapi.json → docs/public/openapi.json, then cd docs && pnpm gen:api to refresh the MDX under docs/content/docs/en/reference/api/. docs-ci.yml fires only on docs/**.
  • A new English i18n key goes in EVERY locale JSON in internal/web/translation/ (13 files) AND must be referenced from frontend/src or Go in the SAME commit — frontend/src/test/i18n-dead-keys.test.ts fails both ways. It is a frontend test, so run npm test, not just make test-go. At runtime the frontend falls back to en-US; Go (internal/web/locale/) returns "" for an unknown key.
  • DB / model changes require a migration in internal/database/db.go.
  • Every state-changing inbound/client op dispatches through runtime.Runtime (internal/web/runtime/) — never straight to internal/xray/api.go, never from a controller or cron job. A direct call passes every local test and silently breaks every multi-node deployment. Other layering rules: docs/architecture.md §8.
  • Conventional commits: type(area): short imperative summary, then a body explaining the why. Types in use: fix, feat, chore, refactor, perf, docs, style.

Go conventions

  • Stdlib testing only (no testify). Table-driven, t.Run subtests, t.Helper() on helpers. Assert the exact value / typed error / emitted string, never just err != nil. Prefer real deps over mocks: throwaway DB via database.InitDB(filepath.Join(t.TempDir(), "x-ui.db")) + t.Cleanup(func() { _ = database.CloseDB() }); httptest for HTTP. internal/sub's initSubDB(t) is the template.
  • A test must fail without its fix. Write it, revert the fix, watch it go red, restore. A test that passes either way is worse than no test: it certifies nothing and then gets cited as proof the fix works.
  • Test what can actually break. No test for a getter, a constant, a rename, a pure map lookup, or inputs the function can never receive. One real test that drives the bug through the actual code path beats five that restate the code.
  • Code must pass golangci-lint run (gofumpt + goimports formatting): make lint.
  • Postgres, xray-gRPC-e2e and scale tests t.Skip unless XUI_TEST_PG_DSN, XUI_DB_TYPE+XUI_DB_DSN, XRAY_E2E_BINARY or XUI_SCALE_TEST is set — a green go test ./... does not mean those paths ran.

Frontend conventions (summary; full version in frontend/CLAUDE.md)

  • Ant Design 6 only — no Tailwind/shadcn. Targeted tweaks, not rewrites.
  • TS strict; oxlint's typescript/no-explicit-any is an error. Zod schemas in src/schemas/ are the source of truth; infer types with z.infer, never hand-write. Do not edit src/generated/.
  • Node 24 (.nvmrc) — make gen imports .ts directly and needs its type stripping; Node 22 dies with ERR_UNKNOWN_FILE_EXTENSION. npm test includes a headless-Chromium Storybook project, so run npx playwright install --with-deps chromium once or make verify fails.
  • Editing frontend/src does NOT change what users see until the Vite build is regenerated into internal/web/dist/. In XUI_DEBUG=true, HTML is served from the frozen embedded FS but JS/CSS off disk — after npm run build you MUST restart go run . or you get a blank page with 404s.
  • After touching share-link logic (src/lib/xray/), run npm run test (golden fixtures); regenerate snapshots (npx vitest run -u) only for intentional output changes, never to make a red test green.

Build, test, verify

A fresh clone has no internal/web/dist/, so a bare go build ./... dies with pattern all:dist: no matching files found while ~35 other packages pass — it reads as a broken repo, not a missing step. Run make dist-stub once; every make Go target already depends on it, which is why make test-go beats go test ./.... Run make help for all targets. The local gate:

make verify   # gen-check + lint + format-check + typecheck + test + build
              # + build-storybook

That is the fast gate, not all of CI. ci.yml also runs make race, make vulncheck, a live-Postgres job (where a SKIP counts as a failure) and a 30s fuzz smoke on FuzzParseLink/FuzzDecodeCertPin — run those locally when you touch DB/dialect or parser code.

Common targets: make gen (regenerate Zod/OpenAPI), make lint (Go + frontend), make test (Go -shuffle=on + frontend), make race, make build. See Makefile.

Definition of done (before opening a PR)

  1. make verify passes — its gen-check already runs make gen and fails on a dirty frontend/src/generated / frontend/public/openapi.json.
  2. Diff is focused; refactors are separate from feature work.
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