import { afterAll, beforeAll, describe, expect, it, vi } from "vitest";
import { randomUUID } from "node:crypto";
import { mkdtemp, realpath, rm } from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { and, eq } from "drizzle-orm";
import {
  createDb,
  companies,
  agents,
  companyMemberships,
  companyFastResponses,
  costEvents,
  fastResponseRequests,
  connectionGrants,
  connectionGrantMembers,
  budgetPolicies,
  budgetReservations,
  heartbeatRunEvents,
  heartbeatRuns,
  issues,
  issueComments,
} from "@paperclipai/db";
import { startEmbeddedPostgresTestDatabase } from "@paperclipai/db/test-embedded-postgres";
import { aiConnectionService } from "../services/ai-connections.js";
import {
  enqueueFastResponse,
  supersedeFastResponse,
  fastResponseTurnQueued,
  fastResponseService,
} from "../services/fast-responses.js";
import {
  fastResponseReceipt,
  type FastResponseOutcome,
} from "../services/fast-response-provider.js";
import { instanceSettingsService } from "../services/instance-settings.js";
import { settleConversationTurn } from "../services/agent-conversations.js";
import { buildLowTrustSourceTrust, LOW_TRUST_QUARANTINED_BODY } from "../services/source-trust.js";
let database: Awaited<ReturnType<typeof startEmbeddedPostgresTestDatabase>>,
  db: ReturnType<typeof createDb>,
  home: string;
beforeAll(async () => {
  home = await realpath(
    await mkdtemp(path.join(os.tmpdir(), "paperclip-fast-response-")),
  );
  vi.stubEnv("PAPERCLIP_HOME", home);
  vi.stubEnv("PAPERCLIP_INSTANCE_ID", "fast-response-fixture");
  database = await startEmbeddedPostgresTestDatabase(
    "paperclip-fast-response-db-",
  );
  db = createDb(database.connectionString);
}, 90000);
afterAll(async () => {
  await database?.cleanup();
  vi.unstubAllEnvs();
  if (home) await rm(home, { recursive: true, force: true });
});
const outcome: FastResponseOutcome = {
  text: "I’ll check the settings panel’s border styling and work on the fix.",
  receipt: fastResponseReceipt({
    usage: { inputTokens: 80, outputTokens: 16 },
    response: { id: "response-1", body: { usage: { cost: 0.00001 } } },
  }),
};
let sequence = 0;
async function fixture() {
  await instanceSettingsService(db).updateExperimental({ enableFastResponses: true });
  const companyId = randomUUID(),
    agentId = randomUUID(),
    issueId = randomUUID();
  await db.insert(companies).values({
    id: companyId,
    name: "Fast response tests",
    issuePrefix: `FR${++sequence}`,
  });
  await db.insert(agents).values({
    id: agentId,
    companyId,
    name: "Alex",
    adapterType: "codex_local",
  });
  await db.insert(companyMemberships).values(
    ["alice", "bob"].map((principalId) => ({
      companyId,
      principalId,
      principalType: "user",
      status: "active",
      membershipRole: "owner",
    })),
  );
  const binding = await aiConnectionService(db).save(
    companyId,
    "alice",
    {
      provider: "openrouter",
      method: "api_key",
      name: "Fast key",
      ownership: "shared",
      apiKey: "fixture-key",
      agentIds: [],
      allAgents: true,
    },
    "fixture-key",
  );
  const provider = vi.fn().mockResolvedValue(structuredClone(outcome)),
    service = fastResponseService(db, { provider });
  const config = {
    connectionId: binding.connectionId,
    grantId: binding.grantId,
    enabled: true,
    model: "openai/gpt-oss-120b",
    allowSponsored: true,
  };
  await service.configure(companyId, "alice", config);
  await db.insert(issues).values({
    id: issueId,
    companyId,
    title: "Settings panel",
    status: "in_progress",
    assigneeAgentId: agentId,
  });
  const [comment] = await db
    .insert(issueComments)
    .values({
      companyId,
      issueId,
      authorUserId: "alice",
      body: "Fix the border styling",
    })
    .returning();
  const source = {
    companyId,
    agentId,
    issueId,
    responsibleUserId: "alice",
    sourceCommentId: comment.id,
    sourceKey: `comment:${comment.id}`,
    acceptedAt: comment.createdAt,
  };
  const enqueue = async () => {
    await db.transaction((tx) =>
      enqueueFastResponse(tx as unknown as typeof db, source),
    );
    return (
      await db
        .select()
        .from(fastResponseRequests)
        .where(eq(fastResponseRequests.companyId, companyId))
    )[0];
  };
  return {
    companyId,
    agentId,
    issueId,
    comment,
    source,
    config,
    binding,
    provider,
    service,
    enqueue,
  };
}
describe("fast response accepted turns", () => {
  it("does not enqueue or infer while the experimental setting is disabled", async () => {
    const f = await fixture();
    await instanceSettingsService(db).updateExperimental({ enableFastResponses: false });
    expect(await f.enqueue()).toBeUndefined();
    expect(await f.service.availability(f.companyId, "alice")).toMatchObject({ available: false });
    expect(await f.service.test(f.companyId, "alice")).toMatchObject({ status: "unavailable", reason: "disabled" });
    expect(f.provider).not.toHaveBeenCalled();
  });

  it("suppresses pending work when the experimental setting is switched off", async () => {
    const f = await fixture();
    const request = await f.enqueue();
    await instanceSettingsService(db).updateExperimental({ enableFastResponses: false });
    await f.service.process(request);
    expect(f.provider).not.toHaveBeenCalled();
    const [row] = await db.select().from(fastResponseRequests).where(eq(fastResponseRequests.id, request.id));
    expect(row).toMatchObject({ status: "skipped", publicationStatus: "suppressed", commentId: null });
  });

  it("retains charges but suppresses a response when disabled during inference", async () => {
    const f = await fixture();
    const request = await f.enqueue();
    f.provider.mockImplementationOnce(async () => {
      await instanceSettingsService(db).updateExperimental({ enableFastResponses: false });
      return structuredClone(outcome);
    });
    await f.service.process(request);
    const [row] = await db.select().from(fastResponseRequests).where(eq(fastResponseRequests.id, request.id));
    expect(row).toMatchObject({ status: "succeeded", publicationStatus: "suppressed", commentId: null });
    expect(row.costEventId).toBeTruthy();
  });

  it.each(["recent", "source"] as const)("keeps quarantined %s text out of the acknowledgement prompt", async location => {
    const f = await fixture();
    const untrusted = "QUARANTINED_PRIVATE_FINDING_DO_NOT_PROMOTE";
    const sourceTrust = buildLowTrustSourceTrust({ issueId: f.issueId, agentId: f.agentId });
    if (location === "source") {
      await db.update(issueComments).set({ body: untrusted, sourceTrust }).where(eq(issueComments.id, f.comment.id));
    } else {
      await db.insert(issueComments).values({ companyId: f.companyId, issueId: f.issueId, authorAgentId: f.agentId,
        body: untrusted, sourceTrust, createdAt: new Date(f.source.acceptedAt.getTime() - 1) });
    }
    await f.service.process(await f.enqueue());
    expect(f.provider).toHaveBeenCalledTimes(1);
    const prompt = f.provider.mock.calls[0][0].prompt as string;
    expect(prompt).not.toContain(untrusted);
    expect(prompt).toContain(LOW_TRUST_QUARANTINED_BODY);
    const [receipt] = await db.select().from(issueComments).where(and(eq(issueComments.issueId, f.issueId), eq(issueComments.origin, "fast_response")));
    expect(receipt.body).not.toContain(untrusted);
    expect(receipt.sourceTrust).toEqual(location === "source" ? sourceTrust : null);
  });
  it("distinguishes the current turn's running agent from older or queued work", async () => {
    const f = await fixture();
    expect(await fastResponseTurnQueued(db, f.source)).toBe(false);
    const [run] = await db
      .insert(heartbeatRuns)
      .values({
        companyId: f.companyId,
        agentId: f.agentId,
        status: "running",
        contextSnapshot: { issueId: f.issueId, wakeCommentId: f.comment.id },
        createdAt: new Date(f.source.acceptedAt.getTime() - 1),
      })
      .returning();
    expect(await fastResponseTurnQueued(db, f.source)).toBe(false);
    await db
      .update(heartbeatRuns)
      .set({
        contextSnapshot: { issueId: f.issueId, wakeCommentId: randomUUID() },
      })
      .where(eq(heartbeatRuns.id, run.id));
    expect(await fastResponseTurnQueued(db, f.source)).toBe(true);
    await db
      .update(heartbeatRuns)
      .set({
        status: "queued",
        createdAt: new Date(f.source.acceptedAt.getTime() + 1),
      })
      .where(eq(heartbeatRuns.id, run.id));
    expect(await fastResponseTurnQueued(db, f.source)).toBe(true);
  });
  it("starts disabled, and disabled turns have no request or cost", async () => {
    const f = await fixture();
    await db
      .delete(companyFastResponses)
      .where(eq(companyFastResponses.companyId, f.companyId));
    expect(await f.service.settings(f.companyId)).toMatchObject({
      enabled: false,
      allowSponsored: true,
    });
    expect(await f.enqueue()).toBeUndefined();
    expect(f.provider).not.toHaveBeenCalled();
  });
  it("deduplicates concurrent workers and persists provenance without fabricating a run", async () => {
    const f = await fixture();
    const row = await f.enqueue();
    await f.enqueue();
    await Promise.all([f.service.process(row), f.service.process(row)]);
    expect(f.provider).toHaveBeenCalledTimes(1);
    const receipts = await db
      .select()
      .from(issueComments)
      .where(
        and(
          eq(issueComments.companyId, f.companyId),
          eq(issueComments.origin, "fast_response"),
        ),
      );
    expect(receipts).toHaveLength(1);
    expect(receipts[0]).toMatchObject({
      authorAgentId: f.agentId,
      createdByRunId: null,
      fastResponseRequestId: row.id,
    });
    expect(
      await db
        .select()
        .from(heartbeatRuns)
        .where(eq(heartbeatRuns.companyId, f.companyId)),
    ).toHaveLength(0);
    await db
      .update(issues)
      .set({
        conversationAgentId: f.agentId,
        conversationUserId: "alice",
        conversationState: "active",
      })
      .where(eq(issues.id, f.issueId));
    const [run] = await db
      .insert(heartbeatRuns)
      .values({
        companyId: f.companyId,
        agentId: f.agentId,
        status: "succeeded",
        invocationSource: "on_demand",
        contextSnapshot: { issueId: f.issueId, wakeCommentId: f.comment.id },
      })
      .returning();
    expect(await settleConversationTurn(db, run)).toBe(false);
    const [event] = await db
      .select()
      .from(costEvents)
      .where(eq(costEvents.companyId, f.companyId));
    expect(event).toMatchObject({
      usageKind: "fast_response",
      heartbeatRunId: null,
      costCents: 0.001,
      responsibleUserId: "alice",
    });
    expect(
      (await db.select().from(issues).where(eq(issues.id, f.issueId)))[0]
        .status,
    ).toBe("in_progress");
    expect(
      (
        await db
          .select()
          .from(budgetReservations)
          .where(eq(budgetReservations.fastResponseRequestId, row.id))
      )[0].state,
    ).toBe("settled");
  });
  it.each([
    "reply",
    "cancel",
    "delete",
    "reassign",
    "edit",
    "revoke",
    "reset",
    "stream",
    "board_stream",
  ])(
    "suppresses output after %s but retains its actual cost",
    async (change) => {
      const f = await fixture(),
        row = await f.enqueue();
      if (change === "reset") {
        await db
          .update(fastResponseRequests)
          .set({ sessionGeneration: 0 })
          .where(eq(fastResponseRequests.id, row.id));
        row.sessionGeneration = 0;
      }
      f.provider.mockImplementationOnce(async () => {
        if (change === "reset")
          await db
            .update(issues)
            .set({ conversationSessionGeneration: 1 })
            .where(eq(issues.id, f.issueId));
        if (change === "board_stream")
          await supersedeFastResponse(db, f.companyId, f.comment.id);
        if (change === "stream") {
          const [run] = await db
            .insert(heartbeatRuns)
            .values({
              companyId: f.companyId,
              agentId: f.agentId,
              status: "running",
              invocationSource: "on_demand",
              contextSnapshot: {
                issueId: f.issueId,
                wakeCommentId: f.comment.id,
              },
            })
            .returning();
          await db.insert(heartbeatRunEvents).values({
            companyId: f.companyId,
            agentId: f.agentId,
            runId: run.id,
            seq: 1,
            eventType: "item.delta",
            payload: {
              prpEvent: {
                payload: {
                  kind: "agentMessage",
                  text: "Here is the recommendation",
                },
              },
            },
          });
        }
        if (change === "reply")
          await db.insert(issueComments).values({
            companyId: f.companyId,
            issueId: f.issueId,
            authorAgentId: f.agentId,
            body: "I fixed the border.",
          });
        if (change === "cancel")
          await db
            .update(issues)
            .set({ status: "cancelled" })
            .where(eq(issues.id, f.issueId));
        if (change === "delete")
          await db.delete(issues).where(eq(issues.id, f.issueId));
        if (change === "reassign")
          await db
            .update(issues)
            .set({ assigneeAgentId: null })
            .where(eq(issues.id, f.issueId));
        if (change === "edit")
          await db
            .update(issueComments)
            .set({ body: "Never mind", updatedAt: new Date(Date.now() + 100) })
            .where(eq(issueComments.id, f.comment.id));
        if (change === "revoke")
          await db
            .update(connectionGrants)
            .set({ status: "revoked" })
            .where(eq(connectionGrants.id, f.binding.grantId));
        return structuredClone(outcome);
      });
      await f.service.process(row);
      const [result] = await db
        .select()
        .from(fastResponseRequests)
        .where(eq(fastResponseRequests.id, row.id));
      expect(result).toMatchObject({
        status: "succeeded",
        publicationStatus: "suppressed",
        commentId: null,
      });
      expect(
        await db
          .select()
          .from(costEvents)
          .where(eq(costEvents.companyId, f.companyId)),
      ).toHaveLength(1);
    },
  );
  it("does not call a provider for expired or denied linked-user turns", async () => {
    const f = await fixture(),
      row = await f.enqueue();
    await db.insert(connectionGrantMembers).values({
      companyId: f.companyId,
      grantId: f.binding.grantId,
      subjectType: "user",
      subjectId: "bob",
    });
    expect(await f.service.process(row)).toMatchObject({
      status: "unavailable",
    });
    expect(f.provider).not.toHaveBeenCalled();
    const g = await fixture(),
      expired = await g.enqueue();
    await g.service.process({ ...expired, expiresAt: new Date(0) });
    expect(g.provider).not.toHaveBeenCalled();
  });
  it("never regenerates interrupted attempts and keeps unknown charges reserved", async () => {
    const f = await fixture(),
      row = await f.enqueue();
    f.provider.mockResolvedValueOnce({
      errorCode: "timeout",
      receipt: fastResponseReceipt(),
    });
    await f.service.process(row);
    await f.service.sweepPending();
    expect(f.provider).toHaveBeenCalledTimes(1);
    expect(
      (
        await db
          .select()
          .from(fastResponseRequests)
          .where(eq(fastResponseRequests.id, row.id))
      )[0].status,
    ).toBe("unknown");
    expect(
      (
        await db
          .select()
          .from(budgetReservations)
          .where(eq(budgetReservations.fastResponseRequestId, row.id))
      )[0].state,
    ).toBe("held");
  });
  it("sponsors accepted unlinked senders using only destination-authorized context", async () => {
    const f = await fixture();
    await db
      .update(issues)
      .set({ title: "PRIVATE INTERNAL TITLE" })
      .where(eq(issues.id, f.issueId));
    const external = {
      ...f.source,
      responsibleUserId: null,
      sponsored: true,
      endpointId: randomUUID(),
    };
    await db.transaction((tx) =>
      enqueueFastResponse(tx as unknown as typeof db, external),
    );
    const [row] = await db
      .select()
      .from(fastResponseRequests)
      .where(eq(fastResponseRequests.companyId, f.companyId));
    const authorizeExternal = vi.fn().mockResolvedValue({
      agentName: "Alex",
      message: "Review this border",
      queued: true,
    });
    const service = fastResponseService(db, {
      provider: f.provider,
      authorizeExternal,
    });
    await service.process(row);
    expect(authorizeExternal).toHaveBeenCalled();
    expect(f.provider).toHaveBeenCalledTimes(1);
    const prompt = f.provider.mock.calls[0][0].prompt;
    expect(prompt).toContain("Review this border");
    expect(prompt).toContain('"state":"queued"');
    expect(prompt).not.toContain("PRIVATE INTERNAL TITLE");
    expect(
      (
        await db
          .select()
          .from(costEvents)
          .where(eq(costEvents.companyId, f.companyId))
      )[0],
    ).toMatchObject({ responsibleUserId: null, usageKind: "fast_response" });
  });
  it("never treats a denied linked user as company sponsored", async () => {
    const f = await fixture();
    await db.transaction((tx) =>
      enqueueFastResponse(tx as unknown as typeof db, {
        ...f.source,
        sponsored: true,
        endpointId: randomUUID(),
      }),
    );
    const [row] = await db
      .select()
      .from(fastResponseRequests)
      .where(eq(fastResponseRequests.companyId, f.companyId));
    await f.service.process(row);
    expect(f.provider).not.toHaveBeenCalled();
  });
  it("expires unstarted backlog without an inference attempt", async () => {
    const f = await fixture(),
      row = await f.enqueue();
    await db
      .update(fastResponseRequests)
      .set({ expiresAt: new Date(0) })
      .where(eq(fastResponseRequests.id, row.id));
    await f.service.sweepPending();
    expect(f.provider).not.toHaveBeenCalled();
    expect(
      (
        await db
          .select()
          .from(fastResponseRequests)
          .where(eq(fastResponseRequests.id, row.id))
      )[0],
    ).toMatchObject({ status: "skipped", errorCode: "expired" });
  });
  it("honors the company reservation budget before dispatch", async () => {
    const f = await fixture();
    await db
      .insert(budgetPolicies)
      .values({
        companyId: f.companyId,
        scopeType: "company",
        scopeId: f.companyId,
        windowKind: "calendar_month_utc",
        amount: 1,
        reservationCents: "2",
        notifyEnabled: false,
      });
    const row = await f.enqueue();
    expect(await f.service.process(row)).toMatchObject({
      status: "unavailable",
    });
    expect(f.provider).not.toHaveBeenCalled();
    expect(
      await db
        .select()
        .from(costEvents)
        .where(eq(costEvents.companyId, f.companyId)),
    ).toHaveLength(0);
  });
  it("releases the reservation after a known provider rejection", async () => {
    const f = await fixture(),
      row = await f.enqueue();
    f.provider.mockResolvedValueOnce({
      errorCode: "provider_auth_failed",
      noProviderWork: true,
      receipt: {
        inputTokens: 0,
        outputTokens: 0,
        costCents: "0",
        costStatus: "estimated",
        providerRequestId: null,
        pricingProvenance: { source: "unknown" },
      },
    });
    await f.service.process(row);
    expect(
      (
        await db
          .select()
          .from(budgetReservations)
          .where(eq(budgetReservations.fastResponseRequestId, row.id))
      )[0].state,
    ).toBe("released");
    expect(
      (
        await db
          .select()
          .from(costEvents)
          .where(eq(costEvents.companyId, f.companyId))
      )[0].costCents,
    ).toBe(0);
  });
  it("tests the fixed sample without posting a conversation message", async () => {
    const f = await fixture();
    const result = await f.service.test(f.companyId, "alice");
    expect(result.status).toBe("succeeded");
    expect(f.provider.mock.calls[0][0].prompt).toContain("settings panel");
    expect(
      await db
        .select()
        .from(issueComments)
        .where(eq(issueComments.companyId, f.companyId)),
    ).toHaveLength(1);
  });
});