import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";

import {
  RECTIFICATION_TELEMETRY_BIRTH_TIME_SOURCES,
  RECTIFICATION_TELEMETRY_FIELDS,
  RECTIFICATION_TELEMETRY_LIVE_WINDOW_MS,
  RECTIFICATION_TELEMETRY_STOP_REASONS,
  buildRectificationTelemetryRow,
  rectificationTelemetryEligible,
  rectificationTelemetryRpcArgs,
  resetRectificationTelemetryForTests,
  scheduleRectificationTelemetry,
  telemetryBirthTimeSource,
  telemetryQuestionKind,
  telemetryStopReason,
  type RectificationTelemetryInput,
} from "../src/lib/rectification-agentic/v9/telemetry.ts";
import { budgetExhausted } from "../src/lib/rectification-agentic/core/rectification-decision.ts";
import { DEFAULT_MAX_DISCRIMINATION_ROUNDS } from "../src/lib/rectification-agentic/core/types.ts";

const USER_ID = "11111111-1111-4111-8111-111111111111";
const CASE_ID = "22222222-2222-4222-8222-222222222222";
const NOW = Date.parse("2026-09-26T08:00:00.000Z");

// Fictional, deliberately identifying-looking content: none of it may reach the row.
const FICTIONAL_NAME = "测试虚构人甲";
const FICTIONAL_BIRTH_DATE = "1990-05-12";
const FICTIONAL_PLACE = "虚构市示例区";
const FICTIONAL_QUOTE = "2015 年 9 月我在虚构市示例区换了工作";

function focus(
  questionId: string,
  status: string,
  minute: number,
  schema: Record<string, unknown> = {},
) {
  const at = new Date(NOW - (60 - minute) * 60_000).toISOString();
  return { questionId, expectedAnswerSchema: schema, status, askedAt: at, resolvedAt: status === "active" ? null : at };
}

function input(overrides: Partial<RectificationTelemetryInput> = {}): RectificationTelemetryInput {
  return {
    dossier: {
      case: {
        candidateRange: { start_time: "04:30", end_time: "05:30" },
        stage: "minute",
        birthTimeSource: "approximate",
        skillVersion: "10.0.30",
        lastActivityAt: new Date(NOW - 30_000).toISOString(),
      },
      turns: [
        { createdAt: new Date(NOW - 45 * 60_000).toISOString() },
        { createdAt: new Date(NOW - 10 * 60_000).toISOString() },
      ],
      evidence: [
        { status: "confirmed", summary: FICTIONAL_QUOTE, domain: "career" },
        { status: "draft", summary: `${FICTIONAL_NAME} ${FICTIONAL_BIRTH_DATE}`, domain: "family" },
        { status: "superseded", summary: FICTIONAL_PLACE, domain: "relocation" },
        { status: "rejected", summary: "不算", domain: "other" },
      ] as unknown as RectificationTelemetryInput["dossier"]["evidence"],
      latestResult: {
        algorithmVersion: "rectification-v5-matrix-scoring-9",
        policyVersion: "rectification-policy-v1",
        decisionReceipt: null,
        createdAt: new Date(NOW - 5 * 60_000).toISOString(),
      },
    },
    focuses: [
      focus("collect:targeted:career", "resolved", 1),
      focus("collect:targeted:relationship", "declined", 2),
      focus("collect:guided:window:2015-09", "resolved", 3),
      focus("probe:career.2015.change", "resolved", 4, { probe_year: 2015, probe_id: "p1" }),
      focus("probe:varga.d9:style", "resolved", 5, { choice_kind: "varga_style" }),
      focus("collect:invite:more", "resolved", 6),
      focus("block:morning", "resolved", 7, { choice_kind: "block_choice" }),
      focus("collect:targeted:finance", "superseded", 8),
    ],
    decision: {
      sessionOutcome: "completed_with_range",
      stopReason: "probe_pool_exhausted",
      precisionGateMet: false,
      credibleRange: ["04:50", "05:06"],
      separation: { ranked: [{}, {}, {}, {}] },
    },
    rangeDelivery: {
      range: ["04:52", "05:04"],
      columns: [{ probability_percent: 41 }, { probability_percent: 34 }, { probability_percent: 25 }],
    },
    now: NOW,
    ...overrides,
  };
}

test("telemetry row keys are exactly the allowlist (new fields must change this test)", () => {
  const row = buildRectificationTelemetryRow(input());
  assert.deepEqual(Object.keys(row).sort(), [...RECTIFICATION_TELEMETRY_FIELDS].sort());
  assert.deepEqual([...RECTIFICATION_TELEMETRY_FIELDS].sort(), [
    "algorithm_version",
    "birth_time_source",
    "candidate_count",
    "duration_seconds",
    "experiences_added",
    "policy_version",
    "precision_gate_met",
    "questions_dated_probe",
    "questions_guided",
    "questions_open",
    "questions_personality",
    "questions_targeted",
    "questions_total",
    "range_width_minutes",
    "skill_version",
    "stop_reason",
    "top_two_gap_points",
    "window_radius_minutes",
  ]);
});

test("telemetry insert payload is the allowlist plus the two ids used only for ownership and dedupe", () => {
  const args = rectificationTelemetryRpcArgs({ userId: USER_ID, caseId: CASE_ID }, buildRectificationTelemetryRow(input()));
  assert.deepEqual(
    Object.keys(args).sort(),
    ["p_case_id", "p_user_id", ...RECTIFICATION_TELEMETRY_FIELDS.map((field) => `p_${field}`)].sort(),
  );
});

test("telemetry row holds only numbers, booleans, closed enums and version ids", () => {
  const row = buildRectificationTelemetryRow(input());
  const serialized = JSON.stringify(row);
  for (const forbidden of [FICTIONAL_NAME, FICTIONAL_BIRTH_DATE, FICTIONAL_PLACE, FICTIONAL_QUOTE, USER_ID, CASE_ID, "04:52", "04:30"]) {
    assert.equal(serialized.includes(forbidden), false, `row must not contain ${forbidden}`);
  }
  const textFields = new Set(["birth_time_source", "stop_reason", "algorithm_version", "policy_version", "skill_version"]);
  for (const [key, value] of Object.entries(row)) {
    if (value === null || typeof value === "boolean") continue;
    if (typeof value === "number") {
      assert.ok(Number.isInteger(value) && value >= 0, `${key} must be a non-negative integer`);
      continue;
    }
    assert.ok(textFields.has(key), `${key} must not be text`);
    assert.match(String(value), /^[A-Za-z0-9][A-Za-z0-9._:+-]{0,63}$/);
  }
  assert.ok((RECTIFICATION_TELEMETRY_BIRTH_TIME_SOURCES as readonly string[]).includes(row.birth_time_source));
  assert.ok((RECTIFICATION_TELEMETRY_STOP_REASONS as readonly string[]).includes(row.stop_reason));
});

test("telemetry row values reflect the delivered card and the new fewer-probes flow", () => {
  const row = buildRectificationTelemetryRow(input());
  assert.equal(row.window_radius_minutes, 30);
  assert.equal(row.birth_time_source, "approximate");
  // superseded focuses were replaced before the user answered them
  assert.equal(row.questions_total, 7);
  assert.equal(row.questions_targeted, 2);
  assert.equal(row.questions_guided, 1);
  assert.equal(row.questions_dated_probe, 1);
  assert.equal(row.questions_personality, 1);
  assert.equal(row.questions_open, 1);
  assert.equal(row.experiences_added, 2);
  // the card range wins over the decision range
  assert.equal(row.range_width_minutes, 12);
  assert.equal(row.candidate_count, 4);
  // 41 − 34 ≥ 5: this card showed percentages (RANGE_DELIVERY_PERCENT_MIN_GAP)
  assert.equal(row.top_two_gap_points, 7);
  assert.equal(row.stop_reason, "pool_exhausted");
  assert.equal(row.precision_gate_met, false);
  assert.equal(row.duration_seconds, 45 * 60);
  assert.equal(row.algorithm_version, "rectification-v5-matrix-scoring-9");
  assert.equal(row.policy_version, "rectification-policy-v1");
  assert.equal(row.skill_version, "10.0.30");
});

test("telemetry drops versions that are not plain version ids and clamps odd values", () => {
  const base = input();
  const row = buildRectificationTelemetryRow({
    ...base,
    dossier: {
      ...base.dossier,
      case: { ...base.dossier.case, skillVersion: "10.0 我的版本", candidateRange: null },
      turns: [],
      latestResult: { algorithmVersion: "x".repeat(80), policyVersion: " ", decisionReceipt: null },
    },
    rangeDelivery: { range: null, columns: [{ probability_percent: 100 }] },
    decision: { ...base.decision, credibleRange: null, precisionGateMet: null },
  });
  assert.equal(row.skill_version, null);
  assert.equal(row.algorithm_version, null);
  assert.equal(row.policy_version, null);
  assert.equal(row.window_radius_minutes, null);
  assert.equal(row.range_width_minutes, null);
  assert.equal(row.top_two_gap_points, null);
  assert.equal(row.precision_gate_met, null);
  assert.equal(row.duration_seconds, 0);
});

test("question kinds come from server-built focus ids and schemas", () => {
  assert.equal(telemetryQuestionKind({ questionId: "collect:targeted:career", expectedAnswerSchema: {} }), "targeted");
  assert.equal(telemetryQuestionKind({ questionId: "collect:guided:window:2015-09", expectedAnswerSchema: {} }), "guided");
  assert.equal(telemetryQuestionKind({ questionId: "probe:x", expectedAnswerSchema: { probe_year: 2019 } }), "dated_probe");
  assert.equal(telemetryQuestionKind({ questionId: "d9_relationship:relationship_style", expectedAnswerSchema: { choice_kind: "varga_style" } }), "personality");
  assert.equal(telemetryQuestionKind({ questionId: "x", expectedAnswerSchema: { tie_break_round: true } }), "personality");
  assert.equal(telemetryQuestionKind({ questionId: "probe:nakshatra.trait", expectedAnswerSchema: {} }), "personality");
  assert.equal(telemetryQuestionKind({ questionId: "collect:relationship:collect_method_evidence", expectedAnswerSchema: {} }), "open");
  assert.equal(telemetryQuestionKind({ questionId: "collect:other:more", expectedAnswerSchema: {} }), "open");
  assert.equal(telemetryQuestionKind({ questionId: "window_widen:widen_window", expectedAnswerSchema: { choice_kind: "widen_window" } }), "other");
});

test("birth time source collapses to the four categories", () => {
  assert.equal(telemetryBirthTimeSource({ birthTimeSource: "hospital_record" }), "hospital_record");
  assert.equal(telemetryBirthTimeSource({ birthTimeSource: "period_only" }), "period_only");
  assert.equal(telemetryBirthTimeSource({ birthTimeSource: "unknown" }), "unknown");
  assert.equal(telemetryBirthTimeSource({ birthTimeSource: "approximate", stage: "block_scan" }), "unknown");
  assert.equal(telemetryBirthTimeSource({ birthTimeSource: "family_exact" }), "approximate");
  assert.equal(telemetryBirthTimeSource({ birthTimeSource: null }), "approximate");
});

test("stop reason: user stop, converged, round cap, user ran out, pool exhausted", () => {
  const base = {
    sessionOutcome: "completed_with_range",
    precisionGateMet: false,
    stopReason: "probe_pool_exhausted",
    roundCapReached: false,
    lastCollectDeclined: false,
  };
  assert.equal(telemetryStopReason({ ...base, sessionOutcome: "provisional_range_user_stopped", precisionGateMet: true }), "user_stopped");
  assert.equal(telemetryStopReason({ ...base, precisionGateMet: true, roundCapReached: true }), "converged");
  assert.equal(telemetryStopReason({ ...base, roundCapReached: true, lastCollectDeclined: true }), "round_cap");
  assert.equal(telemetryStopReason({ ...base, stopReason: "user_uncertainty_too_high" }), "user_no_more");
  assert.equal(telemetryStopReason({ ...base, lastCollectDeclined: true }), "user_no_more");
  assert.equal(telemetryStopReason(base), "pool_exhausted");
  assert.equal(telemetryStopReason({ ...base, stopReason: "tied_first" }), "pool_exhausted");
  // round_cap uses the decision layer's own fuse, not a second copy of it
  assert.equal(budgetExhausted({ inferenceRounds: DEFAULT_MAX_DISCRIMINATION_ROUNDS }), true);
  assert.equal(budgetExhausted({ inferenceRounds: DEFAULT_MAX_DISCRIMINATION_ROUNDS - 1 }), false);
});

test("a declined last collect question marks the row user_no_more", () => {
  const base = input();
  const row = buildRectificationTelemetryRow({
    ...base,
    focuses: [...base.focuses, focus("collect:targeted:health", "declined", 30)],
  });
  assert.equal(row.stop_reason, "user_no_more");
});

test("only a live range-card delivery is eligible", () => {
  assert.equal(rectificationTelemetryEligible(input()), true);
  assert.equal(rectificationTelemetryEligible(input({
    decision: { ...input().decision, sessionOutcome: "collect_evidence" },
  })), false);
  assert.equal(rectificationTelemetryEligible(input({ rangeDelivery: null })), false);
  assert.equal(rectificationTelemetryEligible(input({ rangeDelivery: { range: ["04:52", "05:04"], columns: [] } })), false);
  const stale = input();
  assert.equal(rectificationTelemetryEligible({
    ...stale,
    dossier: {
      ...stale.dossier,
      case: { ...stale.dossier.case, lastActivityAt: new Date(NOW - RECTIFICATION_TELEMETRY_LIVE_WINDOW_MS - 1).toISOString() },
    },
  }), false);
  assert.equal(rectificationTelemetryEligible(input({
    decision: { ...input().decision, sessionOutcome: "provisional_range_user_stopped" },
  })), true);
});

function recordingClient(result: { data: unknown; error: { message?: string; code?: string } | null } | Error) {
  const calls: Array<{ fn: string; args: Record<string, unknown> }> = [];
  return {
    calls,
    client: {
      rpc(fn: string, args: Record<string, unknown>) {
        calls.push({ fn, args });
        if (result instanceof Error) throw result;
        return Promise.resolve(result);
      },
    },
  };
}

function captureWarnings() {
  const lines: string[] = [];
  const original = console.warn;
  console.warn = (...parts: unknown[]) => {
    lines.push(parts.map(String).join(" "));
  };
  return { lines, restore: () => { console.warn = original; } };
}

test("schedule writes once per Case, after the response, with the allowlisted payload", async () => {
  resetRectificationTelemetryForTests();
  const recorder = recordingClient({ data: true, error: null });
  const pending = scheduleRectificationTelemetry({
    accounting: recorder.client,
    userId: USER_ID,
    caseId: CASE_ID,
    build: () => input(),
  });
  assert.equal(recorder.calls.length, 0, "the write must not run on the request's own tick");
  await pending;
  assert.equal(recorder.calls.length, 1);
  assert.equal(recorder.calls[0]!.fn, "record_rectification_telemetry");
  assert.deepEqual(
    Object.keys(recorder.calls[0]!.args).sort(),
    ["p_case_id", "p_user_id", ...RECTIFICATION_TELEMETRY_FIELDS.map((field) => `p_${field}`)].sort(),
  );
  await scheduleRectificationTelemetry({
    accounting: recorder.client,
    userId: USER_ID,
    caseId: CASE_ID,
    build: () => input(),
  });
  assert.equal(recorder.calls.length, 1, "the same process does not re-send a Case");
});

test("schedule skips read-only, non-delivery and unavailable builds without writing", async () => {
  resetRectificationTelemetryForTests();
  const recorder = recordingClient({ data: true, error: null });
  await scheduleRectificationTelemetry({ accounting: recorder.client, userId: USER_ID, caseId: CASE_ID, readOnly: true, build: () => input() });
  await scheduleRectificationTelemetry({ accounting: recorder.client, userId: USER_ID, caseId: CASE_ID, build: () => null });
  await scheduleRectificationTelemetry({
    accounting: recorder.client,
    userId: USER_ID,
    caseId: CASE_ID,
    build: () => input({ decision: { ...input().decision, sessionOutcome: "collect_evidence" } }),
  });
  assert.equal(recorder.calls.length, 0);
  // a Case that was not eligible yet is still recorded once it delivers
  await scheduleRectificationTelemetry({ accounting: recorder.client, userId: USER_ID, caseId: CASE_ID, build: () => input() });
  assert.equal(recorder.calls.length, 1);
});

test("write failures never throw and log only a reason code, never the payload or ids", async () => {
  for (const failure of [
    { data: null, error: { message: "rectification_telemetry_case_not_found", code: "P0002" } },
    { data: null, error: { message: `insert failed for ${CASE_ID} ${FICTIONAL_NAME}` } },
    new Error(`socket closed ${USER_ID}`),
  ]) {
    resetRectificationTelemetryForTests();
    const recorder = recordingClient(failure);
    const warnings = captureWarnings();
    try {
      await assert.doesNotReject(scheduleRectificationTelemetry({
        accounting: recorder.client,
        userId: USER_ID,
        caseId: CASE_ID,
        build: () => input(),
      }));
    } finally {
      warnings.restore();
    }
    assert.equal(warnings.lines.length, 1);
    const line = warnings.lines[0]!;
    assert.match(line, /^\[rectification-telemetry\] write skipped reason=[A-Za-z0-9_]+$/);
    for (const forbidden of [CASE_ID, USER_ID, FICTIONAL_NAME, "04:52"]) {
      assert.equal(line.includes(forbidden), false);
    }
  }
});

test("a throwing build is swallowed on the request path", async () => {
  resetRectificationTelemetryForTests();
  const recorder = recordingClient({ data: true, error: null });
  const warnings = captureWarnings();
  let pending: Promise<void> | null = null;
  try {
    assert.doesNotThrow(() => {
      pending = scheduleRectificationTelemetry({
        accounting: recorder.client,
        userId: USER_ID,
        caseId: CASE_ID,
        build: () => {
          throw new TypeError(`bad ${FICTIONAL_BIRTH_DATE}`);
        },
      });
    });
    await pending;
  } finally {
    warnings.restore();
  }
  assert.equal(recorder.calls.length, 0);
  assert.deepEqual(warnings.lines, ["[rectification-telemetry] write skipped reason=TypeError"]);
});

const migration = readFileSync(
  new URL("../supabase/migrations/20260926010000_rectification_telemetry.sql", import.meta.url),
  "utf8",
);

function tableColumns(sql: string, table: string): string[] {
  const start = sql.indexOf(`create table if not exists public.${table} (`);
  assert.ok(start >= 0, `${table} missing`);
  const body = sql.slice(sql.indexOf("(", start) + 1, sql.indexOf("\n);", start));
  return body
    .split("\n")
    .map((line) => line.trim())
    .filter((line) => /^[a-z_]+ (?:uuid|date|integer|text|boolean)\b/.test(line))
    .map((line) => line.split(" ")[0]!);
}

test("the database row has exactly the allowlisted columns and no identity column", () => {
  assert.deepEqual(
    tableColumns(migration, "rectification_telemetry"),
    ["id", "recorded_week", ...RECTIFICATION_TELEMETRY_FIELDS],
  );
  assert.deepEqual(tableColumns(migration, "rectification_telemetry_reported_cases"), ["case_id"]);
  const telemetryTable = migration.slice(
    migration.indexOf("create table if not exists public.rectification_telemetry ("),
    migration.indexOf("create index if not exists rectification_telemetry_week_idx"),
  );
  assert.doesNotMatch(telemetryTable, /user_id|case_id|session_id|birth_date|birth_place|email|name text|created_at|timestamptz/);
});

test("the write function takes exactly the allowlisted parameters", () => {
  const start = migration.indexOf("create or replace function public.record_rectification_telemetry(");
  const signature = migration.slice(start, migration.indexOf(")\nreturns boolean", start));
  const params = [...signature.matchAll(/\n  (p_[a-z_]+) /g)].map((match) => match[1]);
  assert.deepEqual(params, ["p_user_id", "p_case_id", ...RECTIFICATION_TELEMETRY_FIELDS.map((field) => `p_${field}`)]);
});

test("migration is additive, RLS-guarded, server-write / admin-aggregate-read, 180-day retention", () => {
  assert.doesNotMatch(migration, /alter table public\.(?!rectification_telemetry)/);
  assert.doesNotMatch(migration, /drop (?:table|column|function)/i);
  assert.match(migration, /alter table public\.rectification_telemetry enable row level security/);
  assert.match(migration, /alter table public\.rectification_telemetry_reported_cases enable row level security/);
  assert.match(migration, /references public\.agentic_rectification_cases\(id\) on delete cascade/);
  assert.doesNotMatch(migration, /grant (?:select|insert|update|delete|all)[^;]*on table public\.rectification_telemetry/);
  assert.match(migration, /grant execute on function public\.record_rectification_telemetry\([\s\S]*?\) to service_role;/);
  assert.match(migration, /grant execute on function public\.rectification_telemetry_summary\(integer\) to admin_runtime;/);
  assert.doesNotMatch(migration, /rectification_telemetry_summary\(integer\) to (?:service_role|authenticated|anon|app_runtime)/);
  assert.equal((migration.match(/recorded_week < \(pg_catalog\.timezone\('UTC', pg_catalog\.now\(\)\)\)::date - 180/g) ?? []).length, 2);
  assert.match(migration, /b\.today - 180/);
  assert.match(migration, /least\(coalesce\(p_weeks, 12\), 26\)/);
});

test("the case GET route schedules telemetry without awaiting it", () => {
  const route = readFileSync(new URL("../src/app/api/rectification/cases/[caseId]/route.ts", import.meta.url), "utf8");
  assert.match(route, /onProjected: \(\{ decision, rangeDelivery, readOnly \}\) => \{\s*void scheduleRectificationTelemetry\(/);
  assert.doesNotMatch(route, /await scheduleRectificationTelemetry/);
  assert.match(route, /return NextResponse\.json\(await dossierResponseWithIdentity/);
});