import { createHash } from "node:crypto";
import { spawnSync } from "node:child_process";
import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
import { resolve } from "node:path";

const phaseIndex = process.argv.indexOf("--phase");
const phase = phaseIndex >= 0 ? process.argv[phaseIndex + 1] : "green";
if (!new Set(["red", "green"]).has(phase)) throw new Error(`Unsupported phase: ${phase}`);
const runId = process.env.DADA_TDD_RUN_ID ?? `wp5-05-${phase}-${new Date().toISOString().replace(/[^0-9]/g, "")}`;
const runDirectory = resolve("artifacts", "tdd", runId);
const caseDirectory = resolve(runDirectory, "cases", "TDD-WP5-UPL-001-upload-metering");
if (existsSync(runDirectory)) throw new Error(`Evidence run already exists: ${runId}`);
mkdirSync(caseDirectory, { recursive: true });

const commands = phase === "red"
  ? [["red-focused", "pnpm --filter @dada/shared-contracts build && pnpm exec vitest run tests/integration/wp5-05-sticker-release.test.ts tests/api/wp5-05-sticker-upload.test.ts"]]
  : [
    ["unit", "pnpm test:unit"],
    ["integration", "pnpm test:integration"],
    ["api", "pnpm test:api"],
    ["e2e", "pnpm test:e2e"],
    ["security", "pnpm test:security"],
    ["tdd-trace", "pnpm validate:tdd-trace"],
  ];
const results = [];
for (const [name, command] of commands) {
  const started_at = new Date().toISOString();
  const result = spawnSync(process.env.ComSpec ?? "cmd.exe", ["/d", "/s", "/c", command], {
    encoding: "utf8", env: { ...process.env, DADA_EVIDENCE_DIR_WP5_UPL: caseDirectory }, maxBuffer: 40 * 1024 * 1024,
  });
  if (result.stdout) process.stdout.write(result.stdout);
  if (result.stderr) process.stderr.write(result.stderr);
  results.push({ command, exit_code: result.status ?? 1, finished_at: new Date().toISOString(), name, started_at });
  if (phase === "green" && (result.status ?? 1) !== 0) break;
}

const redConfirmed = phase === "red" && results.length === 1 && results[0].exit_code !== 0;
if (phase === "red") writeFileSync(resolve(caseDirectory, "red-observation.json"), `${JSON.stringify({
  expected_failure: "后台上传未流式校验、原图/缩略图漏计量或 full 仍写入",
  observed_command: results[0].command,
  observed_exit_code: results[0].exit_code,
  status: redConfirmed ? "red_confirmed" : "failed",
}, null, 2)}\n`);
const evidenceRefs = phase === "red" ? ["red-observation.json"] : ["response.json", "db-diff.json", "fs-before.json", "fs-after.json"];
const missingEvidence = evidenceRefs.filter((name) => !existsSync(resolve(caseDirectory, name)));
const commandState = phase === "red" ? redConfirmed : results.length === commands.length && results.every((item) => item.exit_code === 0);
const status = commandState && missingEvidence.length === 0 ? phase === "red" ? "red_confirmed" : "passed" : "failed";
const manifest = { path: "tasks.manifest.json", sha256: createHash("sha256").update(readFileSync("tasks.manifest.json")).digest("hex").toUpperCase() };
const commit = spawnSync("git", ["rev-parse", "--short", "HEAD"], { encoding: "utf8" }).stdout.trim();
const dirty = spawnSync("git", ["status", "--porcelain"], { encoding: "utf8" }).stdout.trim().length > 0;
writeFileSync(resolve(caseDirectory, "commands.json"), `${JSON.stringify({ commands: results, phase, run_id: runId }, null, 2)}\n`);
writeFileSync(resolve(caseDirectory, "result.json"), `${JSON.stringify({
  acceptance_criteria: ["AC-31", "AC-55"], automation: ["automated"], commit,
  evidence_refs: evidenceRefs, layer: ["INTEGRATION", "API", "E2E", "PKG-SEC"], manifest,
  missing_evidence: missingEvidence, phase, red_reason: "后台上传未流式校验、原图/缩略图漏计量或 full 仍写入",
  requirements: ["ADMIN-06"], run_id: runId, status, task_id: "TASK-WP5-05",
  test_id: "TDD-WP5-UPL-001-upload-metering", work_package: "WP-5",
  worktree_under_test: dirty ? "uncommitted implementation" : "clean committed implementation",
}, null, 2)}\n`);
writeFileSync(resolve(runDirectory, "commands.json"), `${JSON.stringify({ commands: results, phase, run_id: runId }, null, 2)}\n`);
writeFileSync(resolve(runDirectory, "evidence.json"), `${JSON.stringify({ cases: [{ missing_evidence: missingEvidence, status, test_id: "TDD-WP5-UPL-001-upload-metering" }], phase, run_id: runId, status }, null, 2)}\n`);
console.log(JSON.stringify({ phase, run_id: runId, status }, null, 2));
if (status === "failed") process.exit(1);
