#!/usr/bin/env bash
set -euo pipefail

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "${repo_root}"

fail() {
  printf 'doc status check failed: %s\n' "$*" >&2
  exit 1
}

require_file() {
  local file="$1"
  [[ -f "${file}" ]] || fail "missing file: ${file}"
}

require_contains() {
  local file="$1"
  local needle="$2"
  grep -Fq -- "${needle}" "${file}" || fail "${file} missing required text: ${needle}"
}

require_regex() {
  local file="$1"
  local pattern="$2"
  grep -Eiq -- "${pattern}" "${file}" || fail "${file} missing required pattern: ${pattern}"
}

required_docs=(
  "README.md"
  "CONTRIBUTING.md"
  "AGENTS.md"
  "DOCS_INDEX.md"
  "CURRENT_STATUS.md"
  "USERGUIDE.md"
  "PROJECT_PLAN.md"
  "docs/architecture/README.md"
  "docs/architecture/adr/0004-rust-bat-go-bat-api-resource-boundary.md"
  "docs/architecture/assetbundle.md"
  "docs/architecture/resource-release-layout.md"
  "docs/guides/development.md"
  "docs/guides/deployment.md"
  "docs/reference/rpc-backend-api.md"
  "docs/reports/CURRENT_GAPS.md"
  "docs/reports/GO_STATUS.md"
  "docs/reports/BAT_API_CONTRACT_FIXTURE_HANDOFF.md"
  "api/openapi/bat-api.yaml"
  "internal/api/openapi.go"
  "internal/api/testdata/contract/README.md"
)

for file in "${required_docs[@]}"; do
  require_file "${file}"
done

[[ ! -e "Agents.md" ]] || fail "stale agent document path exists: Agents.md"
[[ ! -e "CHECK.md" ]] || fail "obsolete CHECK.md still exists"
[[ ! -e "docs/reports/PARSER_FREEZE.md" ]] ||
  fail "obsolete parser freeze document still exists"

go_version="$(sed -n 's/^go[[:space:]]\{1,\}//p' go.mod | head -n 1)"
[[ -n "${go_version}" ]] || fail "go.mod is missing a Go version"
require_contains "README.md" "Go ${go_version}+"
require_contains "docs/guides/development.md" "Go ${go_version}+"
require_contains "DOCS_INDEX.md" "## 1. 项目入口与协作规则"
require_contains "DOCS_INDEX.md" "## 3. 架构、决策与稳定契约"
require_contains "DOCS_INDEX.md" "## 7. 历史归档"
require_contains "DOCS_INDEX.md" "docs/reports/historical/"
require_contains "docs/architecture/README.md" "目标设计"
require_contains "docs/architecture/README.md" "实际实现状态以源码、测试和根目录 \`CURRENT_STATUS.md\` 为准；\`PROJECT_PLAN.md\` 只描述目标和路线图"
require_contains "docs/architecture/adr/0004-rust-bat-go-bat-api-resource-boundary.md" 'Rust `bat` 是官方资源生产者和状态拥有者'
require_contains "docs/architecture/adr/0001-engine-and-application-boundaries.md" "资源同步职责已由 ADR 0004 取代"

placeholder_readmes=(
  "api/README.md"
  "api/proto/README.md"
  "internal/config/README.md"
  "internal/downloader/README.md"
  "internal/extractor/README.md"
  "internal/manifest/README.md"
  "internal/storage/README.md"
  "pkg/README.md"
  "pkg/cas/README.md"
  "pkg/translator/README.md"
  "pkg/types/README.md"
  "web/shared/README.md"
)

for file in "${placeholder_readmes[@]}"; do
  require_file "${file}"
  require_regex "${file}" "not implemented"
  require_contains "${file}" "docs/reports/GO_STATUS.md"
done

require_contains "USERGUIDE.md" "scope=resource_bootstrap_only"
require_contains "USERGUIDE.md" "package_update_manifest=false"
require_contains "docs/reports/GO_STATUS.md" "resource bootstrap + CDN path"
require_contains "docs/reports/GO_STATUS.md" "internal/api/testdata/contract/"
require_contains "CURRENT_STATUS.md" "cmd/bat-api"
require_contains "CURRENT_STATUS.md" "internal/api/testdata/contract/"
require_contains "CURRENT_STATUS.md" "不提供官方账号登录、游戏网关协议或完整 package update manifest"
if grep -Fq "响应只来自已发布 snapshot/RPC，不提供登录、网关、鉴权" CURRENT_STATUS.md; then
  fail "CURRENT_STATUS.md contradicts its documented bat-api token authentication"
fi
require_contains "docs/reports/CURRENT_GAPS.md" "不是完整官方游戏 API"
require_contains "docs/reports/CURRENT_GAPS.md" "daemon.clean-stable"
require_contains "docs/reference/rpc-backend-api.md" "daemon.restart"
require_contains "docs/reference/rpc-backend-api.md" "daemon.clean-stable"
require_contains "docs/reference/rpc-backend-api.md" "localized_release_status"

require_contains "Makefile" "check-docs:"
require_contains ".gitea/workflows/bat.yml" "make check-docs"
require_contains ".gitea/workflows/bat.yml" "make test-go-api"
require_contains ".gitea/workflows/bat.yml" "go vet ./internal/api/... ./internal/backendrpc/... ./cmd/bat-api/..."
require_contains ".gitea/workflows/bat.yml" "go build -o /tmp/bat-api ./cmd/bat-api"
require_contains "Makefile" "cargo clippy --workspace --all-targets -- -D warnings"

openapi_tmp="$(mktemp)"
trap 'rm -f "${openapi_tmp}"' EXIT
awk '
  /^const openAPISpecYAML = `/ {
    started = 1
    sub(/^const openAPISpecYAML = `/, "")
    print
    next
  }
  started && /^`$/ { exit }
  started { print }
' internal/api/openapi.go > "${openapi_tmp}"
cmp -s "api/openapi/bat-api.yaml" "${openapi_tmp}" ||
  fail "static OpenAPI document differs from internal/api/openapi.go"

bash scripts/check-doc-links.sh

printf 'doc status check ok\n'