import { expect } from "@playwright/test";
import { updateIssueSchema } from "../../packages/shared/src/validators/issue.js";
import type { RunnerApi } from "./api.js";
import { readChatOutputDocument, sendChatMessage, type ChatFlowInput, type ChatIssue, type ChatRun } from "./chat-flow.js";
import { dropChatSendAcknowledgement } from "./lost-send.js";

type Agent = {
  id: string; name: string; reportsTo?: string; adapterType?: string;
  adapterConfig?: Record<string, unknown>; runtimeConfig?: Record<string, unknown>;
};
type Comment = { id: string; body: string; authorAgentId?: string; clientRequestId?: string };
type Document = { id: string; body: string; latestRevisionId: string; createdByAgentId?: string };

export function mutableIssueSnapshot(issue: ChatIssue) {
  // Follow the public mutation contract as it grows. Include relationships and
  // fields governed by dedicated endpoints; omit derived read projections such
  // as inbound references, which a legitimate status reply can add to the chat.
  const keys = new Set([...Object.keys(updateIssueSchema.shape),
    "id", "companyId", "responsibleUserId", "labels", "blockedBy", "blocks", "watchdog", "sourceTrust"]);
  const record = issue as unknown as Record<string, unknown>;
  return Object.fromEntries([...keys].map(key => [key, record[key]]));
}

export function assertChatHire(input: {
  agents: Agent[]; leadId: string; hireName: string; hiredId?: string;
  connectionId: string; binding: unknown; taskIds: string[]; tasks: ChatIssue[]; runs: ChatRun[];
}) {
  const hires = input.agents.filter(agent => agent.name === input.hireName);
  expect(hires).toHaveLength(1);
  const hired = hires[0]!;
  const lead = input.agents.find(agent => agent.id === input.leadId)!;
  expect(input.connectionId).toBeTruthy();
  expect(hired).toMatchObject({ reportsTo: input.leadId, adapterType: "paperclip_runner" });
  if (input.hiredId) expect(hired.id).toBe(input.hiredId);
  expect(hired.adapterConfig?.model).toBe(lead.adapterConfig?.model);
  expect(hired.runtimeConfig?.aiConnection).toEqual(input.binding);
  expect(input.tasks.map(task => task.id).sort()).toEqual([...input.taskIds].sort());
  for (const id of input.taskIds) {
    const task = input.tasks.find(task => task.id === id)!;
    expect(task).toMatchObject({ status: "done", assigneeAgentId: hired.id, parentId: null });
    expect(task.projectId).toBeTruthy();
    const runs = input.runs.filter(run => run.contextSnapshot?.issueId === id);
    expect(runs).toHaveLength(1);
    expect(runs[0]).toMatchObject({ agentId: hired.id, status: "succeeded", runtimeMode: "native" });
    expect(runs[0]!.contextSnapshot?.aiConnection).toMatchObject({ connectionId: input.connectionId });
  }
  return hired;
}

export function assertGroundedChatStatus(input: {
  reply: string; expectedIssueIdentifier: string; blocker: string;
  before: ChatIssue; after: ChatIssue; taskIdsBefore: string[]; taskIdsAfter: string[]; taskRuns: ChatRun[];
}) {
  // Mentioning a correct label is insufficient: the answer could falsely call
  // it resolved, or confuse a blocked task with an actively running provider.
  const json = input.reply.trim().replace(/^```(?:json)?\s*/, "").replace(/\s*```$/, "");
  expect(JSON.parse(json)).toMatchObject({
    issueIdentifier: input.expectedIssueIdentifier, status: "blocked",
    currentBlockerLabel: input.blocker, activeRunCount: 0,
  });
  expect(mutableIssueSnapshot(input.after), "Status reporting must preserve mutable issue state")
    .toStrictEqual(mutableIssueSnapshot(input.before));
  expect([...input.taskIdsAfter].sort()).toEqual([...input.taskIdsBefore].sort());
  expect(input.taskRuns).toHaveLength(0);
}

export function assertChatSourceReview(body: string, expected: { planLaunchDay: string; briefLaunchDay: string }) {
  // The user requests JSON, so an independent parser grades the actual saved
  // deliverable. A claim in the chat or a copied source document cannot pass.
  const json = body.trim().replace(/^```(?:json)?\s*/, "").replace(/\s*```$/, "");
  expect(JSON.parse(json)).toMatchObject({ ...expected, consistent: expected.planLaunchDay === expected.briefLaunchDay });
}

export function assertCommittedSendRetry(input: {
  commentId: string; clientRequestId: string; comments: Comment[]; taskId: string;
  tasks: ChatIssue[]; runs: ChatRun[]; chatId: string;
}) {
  expect(input.comments.filter(comment => comment.clientRequestId === input.clientRequestId).map(comment => comment.id)).toEqual([input.commentId]);
  expect(input.tasks.map(task => task.id)).toEqual([input.taskId]);
  expect(input.tasks[0]).toMatchObject({ status: "backlog", parentId: null });
  expect(input.runs.filter(run => run.contextSnapshot?.issueId === input.taskId)).toHaveLength(0);
  const original = input.runs.filter(run => run.contextSnapshot?.wakeCommentId === input.commentId ||
    (Array.isArray(run.contextSnapshot?.wakeCommentIds) && run.contextSnapshot.wakeCommentIds.includes(input.commentId)));
  expect(original).toHaveLength(1);
  expect(original[0]).toMatchObject({ status: "succeeded", runtimeMode: "native" });
  expect(original[0]!.contextSnapshot?.issueId).toBe(input.chatId);
}

export function isChatStopReady(events: Array<{ eventType?: unknown }>, phase: "startup" | "active"): boolean {
  const active = events.some(event => ["turn.started", "turn.accepted"].includes(String(event.eventType)));
  return phase === "active" ? active : !active && events.some(event => event.eventType === "native.process_start_requested");
}

export function assertChatRememberedAfterRestart(reply: string, remembered: string, marker: string) {
  expect(reply).toContain(remembered);
  expect(reply).toContain(marker);
}

export function assertChatStartupStopped(run: ChatRun, events: Array<{ eventType?: unknown; createdAt?: string }>) {
  const cancellation = run.resultJson?.nativeCancellation as Record<string, unknown> | undefined;
  const started = events.filter(event => ["turn.started", "turn.accepted"].includes(String(event.eventType)));
  if (started.some(event => Date.parse(event.createdAt ?? "") < Date.parse(String(cancellation?.recordedAt)))) {
    throw new Error("Harness missed startup Stop boundary: provider turn started before the Stop intent");
  }
  expect(cancellation).toMatchObject({ scope: "run", dispatchState: "acknowledged", dispatched: true });
  expect(run.status).toBe("cancelled");
  expect(started, "A stopped startup must never submit a provider turn").toHaveLength(0);
}

export async function runChatHardeningFlow(context: {
  input: ChatFlowInput; marker: string; issue(): ChatIssue;
  turn(message: string, count: number): Promise<void>; idle(count: number): Promise<void>;
  tasks(): Promise<ChatIssue[]>; allRuns(): Promise<ChatRun[]>; comments(): Promise<Comment[]>;
}) {
  const { input, marker, turn, idle, tasks, allRuns, comments } = context;
  const { api, page, fixtures: f, execution, nonce } = input;
  const companyPath = `/api/companies/${f.company.id}`;
  const project = await api.post<{ id: string; name: string }>(`${companyPath}/projects`, {
    name: `Chat coordination ${nonce}`, description: "Repository-free launch planning and review.",
  });
  const agents = () => api.get<Agent[]>(`${companyPath}/agents`);
  const latestReply = async () => (await comments()).filter(comment => comment.authorAgentId === f.agent.id).at(-1)?.body ?? "";
  const output = (id: string, token: string) => readChatOutputDocument(api, id, token);

  try {
  if (execution.task.id === "hire-delegate-reuse") {
    const hireName = `Morgan Reviewer ${nonce}`;
    await turn(`Hire exactly one teammate named ${hireName}, reporting to you, using your native runner, model, and available AI connection. Have that teammate write a concise launch checklist as a saved Paperclip document with the line "Reference: ${marker}". Put the work in one assigned task in ${project.name}. Link it here and let the teammate complete it.`, 2);
    const first = (await tasks())[0]!;
    expect(first).toBeTruthy();
    const firstOutput = await output(first.id, marker);
    const account = f.aiConnection!;
    const hired = assertChatHire({ agents: await agents(), leadId: f.agent.id, hireName,
      connectionId: account.connectionId, binding: account.binding, taskIds: [first.id], tasks: await tasks(), runs: await allRuns() });
    expect((firstOutput as Document).createdByAgentId).toBe(hired.id);
    await turn(`Have the existing ${hireName} review the checklist on ${first.identifier} and write a separate saved review document with the line "Reference: REVIEW${marker}". Create one review task in ${project.name}, assigned to that same teammate. Include the actual checklist in the handoff so they can review it. Preserve the original checklist and task.`, 4);
    const observed = await tasks();
    const second = observed.find(task => task.id !== first.id)!;
    expect(second).toBeTruthy();
    const reviewOutput = await output(second.id, `REVIEW${marker}`);
    expect((reviewOutput as Document).createdByAgentId).toBe(hired.id);
    expect(await api.get(`/api/issues/${first.id}/documents/${encodeURIComponent(firstOutput.key)}`)).toEqual(firstOutput);
    await turn(`Give me a brief status update on ${first.identifier} and ${second.identifier}: identify their owner and recorded status. Do not create or change work.`, 5);
    assertChatHire({ agents: await agents(), leadId: f.agent.id, hireName, hiredId: hired.id,
      connectionId: account.connectionId, binding: account.binding, taskIds: [first.id, second.id], tasks: await tasks(), runs: await allRuns() });
    const reply = await latestReply();
    expect(reply).toContain(first.identifier!); expect(reply).toContain(second.identifier!);
    expect(reply).toContain(hireName); expect(reply).toMatch(/done|completed/i);
    await input.evidence("chat-hire-reuse.json", { agents: await agents(), tasks: await tasks(), firstOutput, reviewOutput, runs: await allRuns() });
  } else if (execution.task.id === "blocked-status-review") {
    const blocker = `VENUE${marker}`, staleBlocker = `BUDGET${marker}`;
    const source = await api.post<ChatIssue>(`${companyPath}/issues`, {
      title: `Launch brief ${nonce}`, status: "blocked", projectId: project.id,
      description: "The launch brief is waiting for its recorded blocker to be resolved.",
      initialPlan: "The approved launch day is Tuesday.",
    });
    const docResponse = await api.request.put(`/api/issues/${source.id}/documents/brief`, {
      data: { title: "Launch brief", format: "markdown", body: "The launch brief schedules the launch for Wednesday." },
    });
    expect(docResponse.ok()).toBe(true);
    const sourcePlan = await api.get<Document>(`/api/issues/${source.id}/documents/plan`);
    const sourceBrief = await api.get<Document>(`/api/issues/${source.id}/documents/brief`);
    await api.post(`/api/issues/${source.id}/comments`, { body: `Earlier blocker: ${staleBlocker}. Waiting for the budget.` });
    await api.post(`/api/issues/${source.id}/comments`, { body: `Budget is resolved. Current blocker: ${blocker}. Waiting for the venue confirmation. Keep this task blocked; no execution is active.` });
    const sourceBeforeStatus = await api.get<ChatIssue>(`/api/issues/${source.id}`);
    await input.evidence("chat-status-review.json", { source: sourceBeforeStatus, sourcePlan, sourceBrief });
    await turn(`What is the actual current status of ${source.identifier}? Read its latest recorded blocker and execution state. Reply with only JSON containing issueIdentifier, status, currentBlockerLabel, and activeRunCount. You may include an explanation field. Just report; do not change it or create work.`, 1);
    const sourceAfterStatus = await api.get<ChatIssue>(`/api/issues/${source.id}`);
    assertGroundedChatStatus({ reply: await latestReply(), expectedIssueIdentifier: source.identifier!, blocker,
      before: sourceBeforeStatus, after: sourceAfterStatus, taskIdsBefore: [source.id],
      taskIdsAfter: (await tasks()).map(task => task.id), taskRuns: (await allRuns()).filter(run => run.contextSnapshot?.issueId === source.id) });
    const config = execution.profile.buildAgent({ environmentId: f.environment.id, environmentFixtureId: execution.environment.id,
      workspacePath: input.workspacePath, secretRefs: f.secretRefs, executionId: nonce });
    const reviewer = await api.post<Agent>(`${companyPath}/agents`, { ...config, name: `Riley Reviewer ${nonce}`, role: "engineer", reportsTo: f.agent.id });
    await turn(`Have ${reviewer.name} review the saved brief on ${source.identifier} against that task's saved plan, in one separate task in ${project.name}. Give the reviewer both source documents. They should save a JSON review document with planLaunchDay, briefLaunchDay, and a boolean consistent, then complete the review task. Preserve the source task and both documents.`, 3);
    const review = (await tasks()).find(task => task.id !== source.id)!;
    expect(review).toMatchObject({ status: "done", assigneeAgentId: reviewer.id, parentId: null, projectId: project.id });
    const document = await output(review.id, "planLaunchDay");
    assertChatSourceReview(document.body, { planLaunchDay: "Tuesday", briefLaunchDay: "Wednesday" });
    expect((document as Document).createdByAgentId).toBe(reviewer.id);
    const reviewRuns = (await allRuns()).filter(run => run.contextSnapshot?.issueId === review.id);
    expect(reviewRuns).toHaveLength(1);
    expect(reviewRuns[0]).toMatchObject({ agentId: reviewer.id, status: "succeeded", runtimeMode: "native" });
    await turn(`Summarize ${review.identifier}'s recorded review result and tell me whether ${source.identifier} is still blocked. Read the saved evidence; do not change or create work.`, 4);
    const reply = await latestReply();
    expect(reply).toContain("Tuesday"); expect(reply).toContain("Wednesday"); expect(reply).toContain(source.identifier!); expect(reply).toMatch(/blocked/i);
    expect((await tasks()).map(task => task.id).sort()).toEqual([source.id, review.id].sort());
    expect(await api.get(`/api/issues/${source.id}/documents/plan`)).toEqual(sourcePlan);
    expect(await api.get(`/api/issues/${source.id}/documents/brief`)).toEqual(sourceBrief);
    expect(await api.get(`/api/issues/${source.id}`)).toMatchObject({ status: "blocked" });
    await input.evidence("chat-status-review.json", { source: sourceBeforeStatus, sourceAfterStatus, sourcePlan, sourceBrief, review, document, reviewRuns, reply });
  } else if (execution.task.id === "committed-send-retry") {
    const interception = await dropChatSendAcknowledgement(page, marker);
    try {
      await sendChatMessage(page, `Create exactly one task titled Later ${nonce} in ${project.name}, assigned to yourself, in backlog. Save an initial plan containing ${marker}. Do not start it. Link the task here.`);
      const sent = await interception.committed;
      // The real agent completes the accepted request despite its lost HTTP ACK.
      await idle(1);
      const saved = (await tasks())[0]!;
      expect(saved).toBeTruthy();
      const plan = await api.get<Document>(`/api/issues/${saved.id}/documents/plan`);
      expect(plan.body).toContain(marker);
      await interception.dispose();
      await input.restart();
      // Replay the exact interrupted public request, including its original key.
      // This tests transport retries, not automatic replay of a failed provider turn.
      const retried = await api.post<Comment>(sent!.path, sent!.data);
      expect(retried.id).toBe(sent!.commentId);
      await page.goto(`/${f.company.issuePrefix}/chats/${f.agent.id}`, { waitUntil: "commit", timeout: 60_000 });
      await expect(page.getByTestId("task-chat-composer-input")).toBeVisible({ timeout: 60_000 });
      await turn(`What is the saved status of ${saved.identifier}? Just report it; do not create or change work.`, 2);
      assertCommittedSendRetry({ commentId: sent!.commentId, clientRequestId: String(sent!.data.clientRequestId),
        comments: await comments(), taskId: saved.id, tasks: await tasks(), runs: await allRuns(), chatId: context.issue().id });
      expect(await api.get(`/api/issues/${saved.id}/documents/plan`)).toEqual(plan);
      expect(await latestReply()).toMatch(/backlog/i);
      await input.evidence("chat-committed-send-retry.json", { commentId: sent!.commentId, task: saved, plan, runs: await allRuns() });
    } finally {
      await interception.dispose();
    }
  } else throw new Error(`Unsupported chat hardening case ${execution.task.id}`);
  } finally {
    // Preserve the records the matchers inspected even when an assertion fails.
    // Failed API reads remain explicit evidence instead of replacing the failure.
    const capture = async (name: string, load: () => Promise<unknown>) => {
      try { return { name, value: await load() }; }
      catch (error) { return { name, error: String(error) }; }
    };
    const state = await Promise.all([
      capture("agents", agents),
      capture("runs", allRuns),
      capture("chatComments", comments),
      capture("tasks", async () => Promise.all((await tasks()).map(async task => ({
        task,
        comments: await capture("comments", () => api.get(`/api/issues/${task.id}/comments?order=asc`)),
        documents: await capture("documents", async () => {
          const summaries = await api.get<Array<{ key: string }>>(`/api/issues/${task.id}/documents`);
          return Promise.all(summaries.map(document => capture(document.key,
            () => api.get(`/api/issues/${task.id}/documents/${encodeURIComponent(document.key)}`))));
        }),
      })))),
    ]);
    await input.evidence("chat-hardening-state.json", state);
  }
}