import type { Request, Response } from 'express';
import { installSeatStub } from '@heyputer/backend/testFixtures/seatStub';
import { v4 as uuidv4 } from 'uuid';
import { afterAll, beforeAll, describe, expect, it, vi } from 'vitest';
import { makeActor, type Actor } from '../src/backend/core/actor.ts';
import { runWithContext } from '../src/backend/core/context.ts';
import { configContainer } from '../src/backend/exports.ts';
import { PuterServer } from '../src/backend/server.ts';
import { setupTestServer } from '../src/backend/testUtil.ts';
import { handleWhoami } from './whoami.ts';

interface CapturedResponse {
    statusCode: number;
    body: unknown;
}

const makeReq = (query: Record<string, unknown> = {}): Request =>
    ({ query }) as unknown as Request;

const makeRes = () => {
    const captured: CapturedResponse = { statusCode: 200, body: undefined };
    const res = {
        json: vi.fn((value: unknown) => {
            captured.body = value;
            return res;
        }),
        status: vi.fn((code: number) => {
            captured.statusCode = code;
            return res;
        }),
    };
    return { res: res as unknown as Response, captured };
};

let server: PuterServer;

beforeAll(async () => {
    server = await setupTestServer({
        // Feature flag allowlist is enforced in the handler. We seed
        // both an allow-listed flag and an internal flag to verify the
        // internal one never reaches the response.
        feature_flags: {
            create_shortcut: true,
            payment_bypass: true,
        },
    } as never);
});

afterAll(async () => {
    await server?.shutdown();
});

const seedUser = async () => {
    const slug = Math.random().toString(36).slice(2, 8);
    return server.stores.user.create({
        username: `wuser_${slug}`,
        uuid: uuidv4(),
        password: 'hashedpw',
        email: `${slug}@example.com`,
    });
};

describe('whoami extension — handleWhoami', () => {
    // The sidebar label needs this at boot, which is why it rides whoami
    // rather than a call of its own.
    describe('the team an account belongs to', () => {
        // A seat is created, never adopted, so it must have no password.
        const seedSeat = async () => {
            const slug = Math.random().toString(36).slice(2, 8);
            return server.stores.user.create({
                username: `wseat_${slug}`,
                uuid: uuidv4(),
                password: null,
                email: null,
            });
        };

        const seatOf = async (teamName: string) => {
            const seat = await seedSeat();
            const team = {
                uid: `wt-${Math.random().toString(36).slice(2, 9)}`,
                name: teamName,
            };
            installSeatStub(server as never, [seat.id as number], {
                teamUid: team.uid,
                teamName: team.name,
            });
            return { seat, team };
        };

        it('names no team where teams is off', async () => {
            const { seat } = await seatOf('Acme Corp');
            const { res, captured } = makeRes();

            await runWithContext(
                { actor: { user: { uuid: seat.uuid, id: seat.id as number } } },
                () => handleWhoami(makeReq(), res),
            );

            // Off, so the seat is never looked up.
            expect((captured.body as { team?: unknown }).team).toBeUndefined();
        });

        it('says nothing for an account that is not a seat', async () => {
            const user = await seedUser();
            const { res, captured } = makeRes();

            await runWithContext(
                { actor: { user: { uuid: user.uuid, id: user.id as number } } },
                () => handleWhoami(makeReq(), res),
            );

            expect(captured.body).not.toHaveProperty('team');
        });

        it('withholds it from an app actor', async () => {
            // Same class as the phone number: a seat's employer is not an
            // app's business.
            const { seat } = await seatOf('Acme Corp');
            const { res, captured } = makeRes();

            await runWithContext(
                {
                    actor: makeActor({
                        user: { uuid: seat.uuid, id: seat.id as number },
                        app: { uid: 'app-1' },
                    }),
                },
                () => handleWhoami(makeReq(), res),
            );

            expect(captured.body).not.toHaveProperty('team');
        });
    });

    it('returns 401 when no actor is on the context', async () => {
        const { res, captured } = makeRes();

        await runWithContext({ actor: undefined }, () =>
            handleWhoami(makeReq(), res),
        );

        expect(captured.statusCode).toBe(401);
        expect(captured.body).toEqual({ error: 'Authentication required' });
    });

    it('returns 404 when the actor’s user no longer exists', async () => {
        const { res, captured } = makeRes();

        await runWithContext(
            {
                actor: {
                    user: { uuid: 'ghost-uuid', id: 99_999_999 },
                },
            },
            () => handleWhoami(makeReq(), res),
        );

        expect(captured.statusCode).toBe(404);
        expect(captured.body).toEqual({ error: 'User not found' });
    });

    describe("an app's view of the email", () => {
        const appActorFor = async (user: { uuid: string; id: unknown }) => {
            const app = await (
                server.stores.app.create as unknown as (
                    fields: Record<string, unknown>,
                    opts: { ownerUserId: number },
                ) => Promise<{ uid: string; id: number }>
            )(
                {
                    name: `we-${uuidv4()}`,
                    title: 'Email reader',
                    index_url: `https://${uuidv4()}.example/`,
                },
                { ownerUserId: user.id as number },
            );
            return {
                app,
                actor: makeActor({
                    user: { uuid: user.uuid, id: user.id as number },
                    app: { uid: app.uid, id: app.id },
                }),
            };
        };

        const whoamiAs = async (actor: Actor) => {
            const { res, captured } = makeRes();
            await runWithContext({ actor }, () =>
                handleWhoami(makeReq(), res),
            );
            return captured;
        };

        it('is withheld until the user grants it, then shown', async () => {
            const user = await seedUser();
            const { app, actor } = await appActorFor(user);

            const before = (await whoamiAs(actor)).body as Record<
                string,
                unknown
            >;
            expect(before).not.toHaveProperty('email');
            expect(before).not.toHaveProperty('unconfirmed_email');

            await server.services.permission.grantUserAppPermission(
                makeActor({ user: { uuid: user.uuid, id: user.id as number } }),
                app.uid,
                `user:${user.uuid}:email:read`,
            );
            const after = (await whoamiAs(actor)).body as Record<
                string,
                unknown
            >;
            expect(after.email).toBe(user.email);
            expect(after.unconfirmed_email).toBe(user.email);
        });

        it('answers 404 for a missing account even when the check fails', async () => {
            const check = vi
                .spyOn(server.services.permission, 'check')
                .mockRejectedValue(new Error('scan failed'));
            try {
                const captured = await whoamiAs(
                    makeActor({
                        user: { uuid: 'ghost-uuid', id: 99_999_998 },
                        app: { uid: 'app-ghost', id: 1 },
                    }),
                );
                expect(captured.statusCode).toBe(404);
                expect(captured.body).toEqual({ error: 'User not found' });
            } finally {
                check.mockRestore();
            }
        });
    });

    it('returns full user details for a user actor', async () => {
        const user = await seedUser();
        const { res, captured } = makeRes();

        await runWithContext(
            { actor: { user: { uuid: user.uuid, id: user.id as number } } },
            () => handleWhoami(makeReq(), res),
        );

        const body = captured.body as Record<string, unknown>;
        expect(body.username).toBe(user.username);
        expect(body.uuid).toBe(user.uuid);
        expect(body.email).toBe(user.email);
        expect(body.is_temp).toBe(false);
        expect(body.oidc_only).toBe(false);
        // is_user_token is present (true) for user actors.
        expect(body.is_user_token).toBe(true);
        // Account creation time, in unix seconds.
        expect(typeof body.created_ts).toBe('number');
        expect(body.created_ts).toBeGreaterThan(0);
        // `directories` is only sent to user actors — confirm it’s present.
        expect(body.directories).toBeDefined();
        // taskbar_items is only sent to user actors.
        expect(body).toHaveProperty('taskbar_items');
    });

    it('reports the SMS-to-card fallback only once a send has opened it', async () => {
        const user = await server.stores.user.create({
            username: `wuser_${Math.random().toString(36).slice(2, 8)}`,
            uuid: uuidv4(),
            password: 'hashedpw',
            email: `${Math.random().toString(36).slice(2, 8)}@example.com`,
            requires_phone_verification: true,
        } as never);
        const prev = configContainer.phone_verification_card_fallback;
        configContainer.phone_verification_card_fallback = {
            enabled: true,
        } as never;
        try {
            const before = makeRes();
            await runWithContext(
                { actor: { user: { uuid: user.uuid, id: user.id as number } } },
                () => handleWhoami(makeReq(), before.res),
            );
            // Phone-gated, but the user has attempts left — no offer yet.
            expect(
                before.captured.body as Record<string, unknown>,
            ).toMatchObject({ card_fallback_available: false });

            // Exhausting SMS attempts stamps this flag; whoami is then the only
            // thing that can still tell a reloading GUI about the offer, since
            // further sends are rejected by the route's own rate limit.
            await server.stores.kv.set({
                key: `card-fallback-open:${user.id}`,
                value: true,
            });

            const after = makeRes();
            await runWithContext(
                { actor: { user: { uuid: user.uuid, id: user.id as number } } },
                () => handleWhoami(makeReq(), after.res),
            );
            expect(
                after.captured.body as Record<string, unknown>,
            ).toMatchObject({ card_fallback_available: true });
        } finally {
            configContainer.phone_verification_card_fallback = prev;
        }
    });

    it('only forwards allow-listed feature flags', async () => {
        const user = await seedUser();
        const { res, captured } = makeRes();

        await runWithContext(
            { actor: { user: { uuid: user.uuid, id: user.id as number } } },
            () => handleWhoami(makeReq(), res),
        );

        const flags = (captured.body as Record<string, unknown>)
            .feature_flags as Record<string, boolean>;
        // Allowed flag is forwarded as a coerced boolean.
        expect(flags.create_shortcut).toBe(true);
        // Internal flag must never leak.
        expect(flags.payment_bypass).toBeUndefined();
    });

    it('strips desktop_bg_*, created_ts and human_readable_age fields for app actors', async () => {
        const user = await seedUser();
        const { res, captured } = makeRes();

        await runWithContext(
            {
                actor: makeActor({
                    user: { uuid: user.uuid, id: user.id as number },
                    app: { uid: 'app-test-actor' },
                }),
            },
            () => handleWhoami(makeReq(), res),
        );

        const body = captured.body as Record<string, unknown>;
        expect(body.app_name).toBe('app-test-actor');
        // is_user_token is stripped for app actors.
        expect(body.is_user_token).toBeUndefined();
        expect(body.desktop_bg_url).toBeUndefined();
        expect(body.desktop_bg_color).toBeUndefined();
        expect(body.desktop_bg_fit).toBeUndefined();
        expect(body.human_readable_age).toBeUndefined();
        // Account age, in either form, is not exposed to apps.
        expect(body.created_ts).toBeUndefined();
        // Directories are user-only.
        expect(body.directories).toBeUndefined();
    });

    describe('fields added by whoami.details listeners', () => {
        const addAccountDetails = (
            _key: unknown,
            event: { details: Record<string, unknown> },
        ) => {
            Object.assign(event.details, {
                subscribed: true,
                paid_storage: 1024,
                subscription: { tier: 'pro', status: 'trialing' },
                accountEligible: true,
            });
        };

        const whoamiWithListener = async (
            actor: Actor,
            listener: typeof addAccountDetails = addAccountDetails,
        ) => {
            const { res, captured } = makeRes();
            server.clients.event.on('whoami.details', listener);
            try {
                await runWithContext({ actor }, () =>
                    handleWhoami(makeReq(), res),
                );
            } finally {
                server.clients.event.off('whoami.details', listener);
            }
            return captured.body as Record<string, unknown>;
        };

        it('reach an app actor only as the documented subscribed / paid_storage', async () => {
            const user = await seedUser();
            const body = await whoamiWithListener(
                makeActor({
                    user: { uuid: user.uuid, id: user.id as number },
                    app: { uid: 'app-test-actor' },
                }),
            );

            expect(body.subscribed).toBe(true);
            expect(body.paid_storage).toBe(1024);
            expect(body).not.toHaveProperty('subscription');
            expect(body).not.toHaveProperty('accountEligible');
            // Fields the handler built itself still ship.
            expect(body.username).toBe(user.username);
            expect(body.app_name).toBe('app-test-actor');
        });

        it('are withheld from an app reached through an access token it issued', async () => {
            const user = await seedUser();
            const owner = { uuid: user.uuid, id: user.id as number };
            const body = await whoamiWithListener(
                makeActor({
                    user: owner,
                    accessToken: {
                        uid: 'tok-1',
                        issuer: makeActor({
                            user: owner,
                            app: { uid: 'app-issuer' },
                        }),
                    },
                }),
            );

            expect(body.subscribed).toBe(true);
            expect(body).not.toHaveProperty('subscription');
            expect(body).not.toHaveProperty('accountEligible');
        });

        it('all reach a user actor', async () => {
            const user = await seedUser();
            const body = await whoamiWithListener(
                makeActor({ user: { uuid: user.uuid, id: user.id as number } }),
            );

            expect(body).toMatchObject({
                subscribed: true,
                paid_storage: 1024,
                subscription: { tier: 'pro', status: 'trialing' },
                accountEligible: true,
            });
        });

        it('cannot add taskbar_items for an app actor, which core omits', async () => {
            const user = await seedUser();
            const body = await whoamiWithListener(
                makeActor({
                    user: { uuid: user.uuid, id: user.id as number },
                    app: { uid: 'app-test-actor' },
                }),
                (_key, event) => {
                    event.details.taskbar_items = [{ name: 'injected' }];
                },
            );

            expect(body).not.toHaveProperty('taskbar_items');
        });
    });

    it('redacts tmp_password from metadata for user actors', async () => {
        const user = await seedUser();
        await server.stores.user.updateMetadata(user.id as number, {
            tmp_password: 'bootstrap-secret',
            hasDevAccountAccess: true,
        });

        const { res, captured } = makeRes();
        await runWithContext(
            { actor: { user: { uuid: user.uuid, id: user.id as number } } },
            () => handleWhoami(makeReq(), res),
        );

        const body = captured.body as Record<string, unknown>;
        const metadata = body.metadata as Record<string, unknown>;
        expect(metadata.tmp_password).toBeUndefined();
        // Other metadata keys still reach the user's own client.
        expect(metadata.hasDevAccountAccess).toBe(true);
        expect(body.hasDevAccountAccess).toBe(true);
    });

    it('never sends user metadata to app actors', async () => {
        const user = await seedUser();
        await server.stores.user.updateMetadata(user.id as number, {
            tmp_password: 'bootstrap-secret',
        });

        const { res, captured } = makeRes();
        await runWithContext(
            {
                actor: makeActor({
                    user: { uuid: user.uuid, id: user.id as number },
                    app: { uid: 'app-test-actor' },
                }),
            },
            () => handleWhoami(makeReq(), res),
        );

        const body = captured.body as Record<string, unknown>;
        expect(body.metadata).toBeUndefined();
        expect(JSON.stringify(body)).not.toContain('bootstrap-secret');
    });

    it('never exposes phone, card fingerprint or signup identity', async () => {
        const user = await seedUser();
        await server.stores.user.update(user.id as number, {
            phone: '+15551234567',
            card_fingerprint: 'fp_ABC123',
            requires_phone_verification: false,
            requires_card_verification: false,
        });
        // Guard against a vacuous assertion below: the columns really do hold
        // the values we then expect never to see on the wire.
        const stored = await server.stores.user.getById(user.id as number, {
            cached: false,
            force: true,
        });
        expect(stored?.phone).toBe('+15551234567');
        expect(stored?.card_fingerprint).toBe('fp_ABC123');

        for (const actor of [
            makeActor({ user: { uuid: user.uuid, id: user.id as number } }),
            makeActor({
                user: { uuid: user.uuid, id: user.id as number },
                app: { uid: 'app-test-actor' },
            }),
        ]) {
            const { res, captured } = makeRes();
            await runWithContext({ actor }, () => handleWhoami(makeReq(), res));

            const body = captured.body as Record<string, unknown>;
            expect(body.phone).toBeUndefined();
            expect(body.card_fingerprint).toBeUndefined();
            expect(body.password).toBeUndefined();
            expect(body.otp_secret).toBeUndefined();
            expect(body.signup_ip).toBeUndefined();
            // Not just absent as a key — the values must not appear anywhere
            // in the payload (nested under metadata, taskbar items, …).
            const serialized = JSON.stringify(body);
            expect(serialized).not.toContain('5551234567');
            expect(serialized).not.toContain('fp_ABC123');
            // The verification flags, which the GUI acts on, still ship.
            expect(body).toHaveProperty('requires_phone_verification');
            expect(body).toHaveProperty('requires_card_verification');
        }
    });

    it('scrubs sensitive keys added to metadata, and leaves the cached row intact', async () => {
        const user = await seedUser();
        await server.stores.user.updateMetadata(user.id as number, {
            tmp_password: 'bootstrap-secret',
            billing: { card_fingerprint: 'fp_NESTED', tier: 'pro' },
        });

        const { res, captured } = makeRes();
        await runWithContext(
            { actor: { user: { uuid: user.uuid, id: user.id as number } } },
            () => handleWhoami(makeReq(), res),
        );

        const body = captured.body as Record<string, unknown>;
        const metadata = body.metadata as Record<string, unknown>;
        expect(metadata.tmp_password).toBeUndefined();
        // Nested sensitive keys are removed too; siblings survive.
        expect(metadata.billing).toEqual({ tier: 'pro' });
        expect(JSON.stringify(body)).not.toContain('fp_NESTED');

        // The scrub works on a copy — server-side state is untouched.
        const fresh = await server.stores.user.getById(user.id as number, {
            cached: false,
            force: true,
        });
        expect(fresh?.metadata?.tmp_password).toBe('bootstrap-secret');
        expect(
            (fresh?.metadata?.billing as Record<string, unknown>)
                ?.card_fingerprint,
        ).toBe('fp_NESTED');
    });

    it('marks the user as oidc_only when password is null', async () => {
        const slug = Math.random().toString(36).slice(2, 8);
        const oidcUser = await server.stores.user.create({
            username: `oidc_${slug}`,
            uuid: uuidv4(),
            password: null,
            email: `${slug}@oidc.test`,
        });

        const { res, captured } = makeRes();
        await runWithContext(
            {
                actor: {
                    user: {
                        uuid: oidcUser.uuid,
                        id: oidcUser.id as number,
                    },
                },
            },
            () => handleWhoami(makeReq(), res),
        );

        const body = captured.body as Record<string, unknown>;
        expect(body.oidc_only).toBe(true);
        // No email yet means temp account.
        expect(body.is_temp).toBe(false);
    });
});