import assert from "node:assert/strict";
import { spawn } from "node:child_process";
import { once } from "node:events";
import { createServer, type IncomingHttpHeaders } from "node:http";
import type { AddressInfo } from "node:net";
import { test } from "node:test";

test("action chat sends measurements and annotated references on every message and preserves access checks", { timeout: 30_000 }, async () => {
  const owner = "11111111-1111-4111-8111-111111111111";
  const other = "22222222-2222-4222-8222-222222222222";
  const sessionId = "33333333-3333-4333-8333-333333333333";
  const actionId = "44444444-4444-4444-8444-444444444444";
  const otherActionId = "55555555-5555-4555-8555-555555555555";
  const referenceSessionId = "77777777-7777-4777-8777-777777777777";
  const foreignSessionId = "88888888-8888-4888-8888-888888888888";
  const analytics = { foot_region: "Toe", active_foot_speed: 1232.04, standing_foot_contact_seconds: 0,
    ball_speed: 1303.31, touch_frame: 766, minimum_knee_angle: null, future_metric: false };
  const measured = { id: actionId, label: "Pass", rawAnalytics: analytics,
    inActionMetrics: Object.entries(analytics).map(([name, value]) => ({ name, value, unit: name === "active_foot_speed" ? "cm/s" : "" })) };
  const otherMeasured = { id: otherActionId, label: "Shoot", rawAnalytics: { ball_speed: 1303.31, active_foot_speed: 1232.04 },
    inActionMetrics: [{ name: "Ball Speed", value: 1303.31, unit: "cm/s" }, { name: "Active Foot Speed", value: 1232.04, unit: "cm/s" }] };
  let role = "user";
  let sessionOwner = owner;
  let resultsAvailable = true;
  let analysisStatus = 200;
  let analysisReads = 0;
  let analysisHeaders: IncomingHttpHeaders = {};
  let savedFeedbackAvailable = false;
  let referencesAvailable = true;
  let annotationsFail = false;
  let referenceResultsAvailable = true;
  let referenceReads = 0;
  let mutations = 0;
  const referenceAnalytics = { active_foot: "left", ball_speed: 1303.31, active_foot_speed: 1232.04, standing_foot_contact_seconds: 0, touch_frame: 999999 };
  const offsets: Record<string, number> = { "00-blank": 0, "02-reference": 0, "00-foreign": 5, "03-reference": 300,
    "04-reference": 200, "05-reference": 100, "06-reference": 50, "07-reference": 20, "08-reference": 10, "zz-late": 1, "zz-wrong-report": 0 };
  const referenceUsers = new Set<string>();
  const reference = (id: string, type = "Pass", userId = owner, score: number | null = 7, notes = ["Reference coach note."]) => ({
    action_id: id, score, annotations_notes: notes.map((note) => ({ note })),
    actions: { action_id: id, session_id: userId === owner ? referenceSessionId : foreignSessionId, type,
      sessions: { user_id: userId, players: { gender: "female", bdate: "2000-01-01", height: 170, weight: 65, position: "Forward" } } },
  });
  const examples = [reference(actionId), reference("00-foreign", "Pass", other, null), reference("shoot-reference", "Shoot"),
    reference("00-blank", "Pass", owner, null, ["  "]), reference("01-empty"), reference("01-missing"),
    reference("02-reference", "Pass", owner, 0, []), reference("03-reference", "Pass", owner, null),
    ...Array.from({ length: 5 }, (_, index) => reference(`${String(index + 4).padStart(2, "0")}-reference`)),
    ...Array.from({ length: 110 }, (_, index) => reference(`far-${String(index).padStart(3, "0")}`)),
    reference("zz-late", "Pass", other, 0), reference("zz-no-common"), reference("zz-wrong-report")];
  const referenceReport = (item: ReturnType<typeof reference>) => {
    const rawAnalytics: Record<string, unknown> = item.action_id === "01-empty" ? {} : item.action_id === "zz-no-common" ? { unrelated_metric: 42 }
      : { ...referenceAnalytics, active_foot_speed: referenceAnalytics.active_foot_speed + (offsets[item.action_id] ?? 500) };
    return { id: item.action_id, label: item.action_id === "zz-wrong-report" ? "Shoot" : item.actions.type, rawAnalytics,
      inActionMetrics: Object.entries(rawAnalytics).map(([name, value]) => ({ name, value, unit: "" })) };
  };
  type Reference = { session_id: string; action_id: string; action_type: string; player: { gender: string }; score: number | null; notes: string[];
    results: { metrics: unknown[]; analytics: unknown } };
  type ChatPayload = { actions: unknown[]; message: string; history: unknown[];
    context: { action?: { action_id: string; results: { metrics: unknown[]; analytics: unknown }; references: Reference[]; feedback: string[]; annotations: unknown }; actions?: unknown[] } };
  const chats: ChatPayload[] = [];
  const generations: { actions: { action_id: string; references: Reference[] }[] }[] = [];
  let generationOverride: unknown;
  const upstream = createServer(async (req, res) => {
    const url = new URL(req.url!, "http://stub");
    res.setHeader("Content-Type", "application/json");
    if (url.pathname === "/auth/v1/user") return res.end(JSON.stringify({ id: owner, email: "test@example.com" }));
    if (url.pathname === `/api/sessions/${sessionId}`) {
      analysisReads++;
      analysisHeaders = req.headers;
      res.statusCode = analysisStatus;
      return res.end(JSON.stringify({ id: sessionId, actions: resultsAvailable ? [otherMeasured, measured] : [] }));
    }
    if ([`/api/sessions/${referenceSessionId}`, `/api/sessions/${foreignSessionId}`].includes(url.pathname)) {
      referenceReads++;
      const id = url.pathname.split("/").at(-1);
      const expectedOwner = id === referenceSessionId ? owner : other;
      referenceUsers.add(String(req.headers["x-sporalize-user-id"]));
      if (req.headers["x-sporalize-user-id"] !== expectedOwner) {
        res.statusCode = 403;
        return res.end("{}");
      }
      res.statusCode = referenceResultsAvailable ? 200 : 503;
      return res.end(JSON.stringify({ id, actions: examples.filter((item) => item.action_id !== "01-missing" && item.actions.session_id === id).map(referenceReport) }));
    }
    if (url.pathname === "/api/chat") {
      let body = "";
      for await (const chunk of req) body += chunk;
      chats.push(JSON.parse(body));
      return res.end(JSON.stringify({ reply: "Measured coaching reply." }));
    }
    if (url.pathname === "/api/session/generate") {
      let body = "";
      for await (const chunk of req) body += chunk;
      const input = JSON.parse(body);
      generations.push(input);
      return res.end(JSON.stringify(generationOverride ?? { actions: input.actions.map((action: { action_id: string }) => ({ action_id: action.action_id, feedback: ["Generated feedback."] })), session_feedback: ["Session summary."] }));
    }
    const table = url.pathname.split("/").at(-1);
    if (req.method !== "GET") { mutations++; return res.end("[]"); }
    if (table === "annotations" && annotationsFail) {
      res.statusCode = 400;
      return res.end(JSON.stringify({ message: "Annotations unavailable." }));
    }
    let rows: Record<string, unknown>[] = table === "users" ? [{ user_id: owner, account_role: role }]
      : table === "users_subscriptions" ? [{ user_id: owner, subscription_id: "plan", startdate: "2000-01-01", enddate: "2099-01-01", plan: { subscription_id: "plan" } }]
      : table === "sessions" ? [{ session_id: sessionId, user_id: sessionOwner, name: "Practice", players: { fname: "Player", gender: "male", bdate: "2000-01-01" } }]
      : table === "actions" ? [actionId, otherActionId].map((id) => ({ action_id: id, session_id: sessionId, type: id === actionId ? "Pass" : "Shoot", start_frame: 750, end_frame: 780,
        annotations: [{ score: 7, annotations_notes: [{ note: "Coach note." }] }] }))
      : table === "annotations" ? referencesAvailable ? examples : []
      : table === "actions_feedbacks" ? savedFeedbackAvailable ? [{ action_id: actionId, feedback: "Saved action evaluation." }] : []
      : table === "sessions_feedbacks" ? [{ session_id: sessionId, feedback: "Saved session evaluation." }] : [];
    const value = (row: Record<string, unknown>, key: string): unknown => key.split(".").reduce<unknown>((item, part) => (item as Record<string, unknown> | undefined)?.[part], row);
    for (const [key, filter] of url.searchParams) {
      if (filter.startsWith("eq.")) rows = rows.filter((row) => String(value(row, key)) === filter.slice(3));
      if (filter.startsWith("neq.")) rows = rows.filter((row) => String(value(row, key)) !== filter.slice(4));
    }
    if (url.searchParams.get("order") === "action_id.asc") rows = [...rows].sort((a, b) => String(a.action_id).localeCompare(String(b.action_id)));
    const from = Number(url.searchParams.get("offset") ?? 0);
    const limit = Number(url.searchParams.get("limit") ?? rows.length);
    res.end(JSON.stringify(rows.slice(from, from + limit)));
  });
  upstream.listen(0, "127.0.0.1");
  await once(upstream, "listening");
  const upstreamOrigin = `http://127.0.0.1:${(upstream.address() as AddressInfo).port}`;
  const portProbe = createServer();
  portProbe.listen(0, "127.0.0.1");
  await once(portProbe, "listening");
  const port = (portProbe.address() as AddressInfo).port;
  await new Promise<void>((resolve) => portProbe.close(() => resolve()));
  const origin = `http://127.0.0.1:${port}`;
  const child = spawn(process.execPath, ["--import", "tsx", "src/server.ts"], {
    env: { ...process.env, NODE_ENV: "test", PORT: String(port), FRONTEND_URL: origin, BACKEND_URL: origin,
      SUPABASE_URL: upstreamOrigin, SUPABASE_ANON_KEY: "test-anon", SUPABASE_SERVICE_ROLE_KEY: "test-service",
      ANALYSIS_API_URL: upstreamOrigin, ANALYSIS_PROXY_SECRET: "x".repeat(32),
      AGENT_API_URL: upstreamOrigin, AGENT_API_KEY: "a".repeat(32), HF_TOKEN: "" },
    stdio: ["ignore", "pipe", "pipe"],
  });
  try {
    let stderr = "";
    child.stderr.on("data", (data) => { stderr += String(data); });
    await new Promise<void>((resolve, reject) => {
      child.stdout.on("data", (data) => { if (String(data).includes("API listening")) resolve(); });
      child.once("exit", (code) => reject(new Error(`API exited: ${code}\n${stderr}`)));
      child.once("error", reject);
    });
    const request = (input: Record<string, unknown>, authenticated = true) => fetch(`${origin}/api/agent/chat`, {
      method: "POST", signal: AbortSignal.timeout(10000),
      headers: { "Content-Type": "application/json", Origin: origin, ...(authenticated ? { Cookie: "sp_access=access" } : {}) },
      body: JSON.stringify({ message: "Explain these measurements.", ...input }),
    });
    const selected = { sessionId, actionId };
    assert.equal((await request(selected, false)).status, 401);
    assert.equal(analysisReads, 0);
    assert.equal((await request(selected)).status, 200);
    assert.equal(analysisReads, 1);
    assert.deepEqual(chats[0].context.action?.results, { metrics: measured.inActionMetrics, analytics });
    assert.deepEqual(chats[0].context.action?.feedback, []);
    const expectedReferences = ["zz-late", "00-foreign", "08-reference", "07-reference", "06-reference"];
    assert.deepEqual(chats[0].context.action?.references.map((item) => item.action_id), expectedReferences);
    assert.ok(chats[0].context.action?.references.every((item) => item.action_type === "Pass" && item.player.gender === "female"));
    const nearest = referenceReport(examples.find((item) => item.action_id === "zz-late")!);
    assert.deepEqual(chats[0].context.action?.references[0].results, { metrics: nearest.inActionMetrics, analytics: nearest.rawAnalytics });
    assert.equal(chats[0].context.action?.references[0].session_id, foreignSessionId, "comparisons include other accounts with their real session IDs");
    assert.equal(chats[0].context.action?.references[0].score, 0);
    assert.equal(chats[0].context.action?.references[1].score, null);
    assert.deepEqual(chats[0].context.action?.references[0].notes, ["Reference coach note."]);
    assert.equal(referenceReads, 2, "each session is fetched once across all candidate pages");
    assert.deepEqual(referenceUsers, new Set([owner, other]));
    assert.deepEqual(chats[0].context.action?.annotations, [{ score: 7, annotations_notes: [{ note: "Coach note." }] }]);
    assert.equal(analysisHeaders["x-sporalize-user-id"], owner);
    assert.equal(analysisHeaders["x-sporalize-proxy-secret"], "x".repeat(32));
    assert.equal(analysisHeaders["x-sporalize-admin"], undefined);

    analytics.ball_speed = 1500.123456;
    measured.inActionMetrics.find((metric) => metric.name === "ball_speed")!.value = analytics.ball_speed;
    savedFeedbackAvailable = true;
    referenceAnalytics.ball_speed = 1400.75;
    const history = [{ role: "user", content: "Explain these measurements." }, { role: "assistant", content: "Previous reply." }];
    assert.equal((await request({ ...selected, message: "What changed?", history })).status, 200);
    assert.equal(analysisReads, 2);
    assert.deepEqual(chats[1].context.action?.results, { metrics: measured.inActionMetrics, analytics });
    assert.deepEqual(chats[1].context.action?.feedback, ["Saved action evaluation."]);
    const updatedNearest = referenceReport(examples.find((item) => item.action_id === "zz-late")!);
    assert.deepEqual(chats[1].context.action?.references[0].results, { metrics: updatedNearest.inActionMetrics, analytics: updatedNearest.rawAnalytics });
    assert.equal(referenceReads, 4, "each message gets current reference measurements");
    assert.deepEqual(chats[1].history, history);
    assert.equal((await request({ sessionId, actionId: otherActionId })).status, 200);
    assert.deepEqual(chats[2].context.action?.results, { metrics: otherMeasured.inActionMetrics, analytics: otherMeasured.rawAnalytics });
    assert.deepEqual(chats[2].context.action?.references.map((item) => item.action_id), ["shoot-reference"]);

    const chatCount = chats.length;
    const readCount = analysisReads;
    sessionOwner = other;
    assert.equal((await request(selected)).status, 404);
    assert.equal(analysisReads, readCount, "unauthorized requests must not load measurements");
    assert.equal(chats.length, chatCount);
    role = "admin";
    assert.equal((await request(selected)).status, 200);
    assert.equal(analysisHeaders["x-sporalize-admin"], "true");
    assert.equal(analysisHeaders["x-sporalize-user-id"], owner);
    assert.deepEqual(chats.at(-1)?.context.action?.results, { metrics: measured.inActionMetrics, analytics });
    role = "user";
    sessionOwner = owner;

    referencesAvailable = false;
    assert.equal((await request(selected)).status, 200);
    assert.deepEqual(chats.at(-1)?.context.action?.references, []);
    referencesAvailable = true;
    referenceResultsAvailable = false;
    const readsBeforeMissing = referenceReads;
    assert.equal((await request(selected)).status, 200);
    assert.deepEqual(chats.at(-1)?.context.action?.references, []);
    assert.equal(referenceReads, readsBeforeMissing + 2, "unavailable reference results are not retried for each candidate page");
    referenceResultsAvailable = true;
    const chatsBeforeFailure = chats.length;
    annotationsFail = true;
    assert.equal((await request(selected)).status, 500);
    assert.equal(chats.length, chatsBeforeFailure, "a DB failure must not be presented as an empty search");
    annotationsFail = false;

    const successfulChats = chats.length;
    resultsAvailable = false;
    assert.equal((await request(selected)).status, 404);
    analysisStatus = 503;
    assert.equal((await request(selected)).status, 500);
    assert.equal(chats.length, successfulChats, "missing results must not produce an ungrounded reply");
    const failedReads = analysisReads;
    assert.equal((await request({ actionId })).status, 400);
    assert.equal((await request({ ...selected, actionId: "66666666-6666-4666-8666-666666666666" })).status, 404);
    assert.equal(analysisReads, failedReads);
    assert.equal((await request({ sessionId })).status, 200);
    assert.equal((await request({})).status, 200);
    assert.equal(analysisReads, failedReads, "general and session chats do not need action measurements");
    assert.equal(chats.at(-1)?.context.action, undefined);
    assert.equal(mutations, 0, "chat must not save or replace feedback");

    analysisStatus = 200;
    resultsAvailable = true;
    Object.assign(process.env, { FRONTEND_URL: origin, BACKEND_URL: origin, SUPABASE_URL: upstreamOrigin,
      SUPABASE_ANON_KEY: "test-anon", SUPABASE_SERVICE_ROLE_KEY: "test-service", ANALYSIS_API_URL: upstreamOrigin,
      ANALYSIS_PROXY_SECRET: "x".repeat(32), AGENT_API_URL: upstreamOrigin, AGENT_API_KEY: "a".repeat(32), HF_TOKEN: "" });
    const { createClient } = await import("@supabase/supabase-js");
    const { actionDistance, generateSessionFeedback } = await import("../src/agent-session.js");
    const sample = (rawAnalytics: Record<string, unknown>) => ({ id: "sample", label: "Pass", rawAnalytics });
    assert.equal(actionDistance(sample({ speed: 0, touch_frame: 1 }), sample({ speed: 0, touch_frame: 9999 })), 0);
    assert.equal(actionDistance(sample({ missing: null, flag: false, region: "Toe" }), sample({ speed: 0 })), null);
    assert.equal(actionDistance(sample({ speed: 10 }), sample({ speed: "10" })), null);
    assert.equal(actionDistance(sample({ speed: 10 }), sample({ unrelated: 10 })), null);
    assert.ok(actionDistance(sample({ speed: 1000, angle: 100 }), sample({ speed: 1010, angle: 101 }))!
      < actionDistance(sample({ speed: 1000, angle: 100 }), sample({ speed: 1000 }))!, "missing values must not outrank complete close measurements");
    assert.equal(actionDistance(sample({ ball_speed: 10, touch_frame: 1 }), sample({ ball_speed: 9999, touch_frame: 9999 })), null);
    assert.equal(actionDistance(sample({ active_foot_speed: 10, ball_speed: 10, touch_frame: 1 }), { id: "metric", label: "Pass",
      inActionMetrics: [{ name: "Active Foot Speed", value: 10 }, { name: "Ball Speed", value: 9999 }, { name: "Touch Frame", value: 9999 }] }), 0);
    const db = createClient(upstreamOrigin, "test-service", { auth: { persistSession: false } });
    const readsBeforeGeneration = referenceReads;
    await generateSessionFeedback(db, sessionId, owner);
    assert.equal(referenceReads - readsBeforeGeneration, 2, "all actions in a generation share reference session downloads");
    assert.deepEqual(generations[0].actions.find((item) => item.action_id === actionId)?.references.map((item) => item.action_id), expectedReferences);
    assert.deepEqual(generations[0].actions.find((item) => item.action_id === otherActionId)?.references.map((item) => item.action_id), ["shoot-reference"]);
    assert.equal(mutations, 6, "automatic generation still persists feedback for both actions and the session");
    await generateSessionFeedback(db, sessionId, owner);
    assert.equal(referenceReads - readsBeforeGeneration, 4, "a new generation fetches fresh reference measurements");
    const mutationsBeforeInvalid = mutations;
    for (const invalid of [
      { actions: [{ action_id: "foreign-action", feedback: ["Bad."] }, { action_id: otherActionId, feedback: ["Good."] }], session_feedback: ["Summary."] },
      { actions: [{ action_id: actionId, feedback: ["Bad."] }, { action_id: actionId, feedback: ["Duplicate."] }], session_feedback: ["Summary."] },
      { actions: [{ action_id: actionId, feedback: ["Bad."] }], session_feedback: ["Summary."] },
      { actions: [{ action_id: actionId, feedback: ["Bad."] }, { action_id: otherActionId, feedback: [" "] }], session_feedback: ["Summary."] },
    ]) {
      generationOverride = invalid;
      await assert.rejects(generateSessionFeedback(db, sessionId, owner), /Agent generation failed/);
      assert.equal(mutations, mutationsBeforeInvalid, "invalid agent output cannot change stored feedback");
    }
    generationOverride = undefined;
  } finally {
    if (child.exitCode === null && child.signalCode === null) {
      const exited = once(child, "exit");
      child.kill();
      await exited;
    }
    upstream.closeAllConnections();
    await new Promise<void>((resolve) => upstream.close(() => resolve()));
  }
});