import test, { expect } from '@playwright/test';
import * as jose from 'jose';
import { apis, oidcClients } from '../data';
import { cleanupBackend } from '../utils/cleanup.util';
import * as oidcUtil from '../utils/oidc.util';

test.beforeEach(async () => await cleanupBackend());

function tokenScopes(claims: jose.JWTPayload): string[] {
	if (Array.isArray((claims as Record<string, unknown>).scp)) {
		return (claims as Record<string, unknown>).scp as string[];
	}
	if (typeof claims.scope === 'string') {
		return claims.scope.split(' ');
	}
	return [];
}

function tokenAudiences(claims: jose.JWTPayload): string[] {
	if (Array.isArray(claims.aud)) return claims.aud;
	if (typeof claims.aud === 'string') return [claims.aud];
	return [];
}

// ---------------------------------------------------------------------------
// Admin UI
// ---------------------------------------------------------------------------

test('Lists the preseeded API', async ({ page }) => {
	await page.goto('/settings/admin/apis');

	const row = page.getByRole('row', { name: apis.orders.name });
	await expect(row).toBeVisible();
	await expect(row).toContainText(apis.orders.resource);
});

test('Create API', async ({ page }) => {
	await page.goto('/settings/admin/apis');

	await page.getByRole('button', { name: 'Add API' }).click();
	await page.getByLabel('Name', { exact: true }).fill('Billing API');
	await page.getByLabel('Resource').fill('https://api.billing.test');
	await page.getByRole('button', { name: 'Save' }).click();

	await expect(page.locator('[data-type="success"]')).toHaveText('API created successfully');
	await page.waitForURL('/settings/admin/apis/*');

	await expect(page.getByLabel('Name', { exact: true })).toHaveValue('Billing API');
	await expect(page.getByLabel('Resource')).toHaveValue('https://api.billing.test');
});

test('Cannot create an API with the issuer as resource', async ({ page }) => {
	const { issuer } = await page.request
		.get('/.well-known/openid-configuration')
		.then((r) => r.json());

	await page.goto('/settings/admin/apis');
	await page.getByRole('button', { name: 'Add API' }).click();
	await page.getByLabel('Name', { exact: true }).fill('Reserved API');
	await page.getByLabel('Resource').fill(issuer);
	await page.getByRole('button', { name: 'Save' }).click();

	await expect(page.locator('[data-type="error"]')).toContainText('reserved');
});

test('Edit the name of an API', async ({ page }) => {
	await page.goto(`/settings/admin/apis/${apis.orders.id}`);

	await page.getByLabel('Name', { exact: true }).fill('Orders API renamed');
	await page.getByRole('button', { name: 'Save' }).nth(0).click();

	await expect(page.locator('[data-type="success"]')).toHaveText('API updated successfully');

	await page.reload();
	await expect(page.getByLabel('Name', { exact: true })).toHaveValue('Orders API renamed');
});

test('Add a permission to an API', async ({ page }) => {
	await page.goto(`/settings/admin/apis/${apis.orders.id}`);

	// The seeded API already has permissions, so the button reads "Add another"
	await page.getByRole('button', { name: 'Add another' }).click();
	await page.getByPlaceholder('Permission', { exact: true }).last().fill('ship:orders');
	await page.getByPlaceholder('Name', { exact: true }).last().fill('Ship orders');
	await page.getByRole('button', { name: 'Save' }).nth(1).click();

	await expect(page.locator('[data-type="success"]')).toHaveText(
		'Permissions updated successfully'
	);

	await page.reload();
	// The two seeded permissions plus the newly added one
	await expect(page.getByPlaceholder('Permission', { exact: true })).toHaveCount(3);
});

test('Delete an API', async ({ page }) => {
	await page.goto('/settings/admin/apis');

	await page.getByRole('row', { name: apis.orders.name }).getByRole('button').click();
	await page.getByRole('menuitem', { name: 'Delete' }).click();
	await page.getByRole('button', { name: 'Delete' }).click();

	await expect(page.locator('[data-type="success"]')).toHaveText('API deleted successfully');
	await expect(page.getByRole('row', { name: apis.orders.name })).not.toBeVisible();
});

test('Grant a client user-delegated and client access to API permissions', async ({ page }) => {
	// Nextcloud has no API access granted by default
	await page.goto(`/settings/admin/oidc-clients/${oidcClients.nextcloud.id}`);

	// Open the API access tab, then edit the Orders API row
	await page.getByRole('tab', { name: 'API access' }).click();
	await page
		.getByRole('row', { name: apis.orders.name })
		.getByRole('button', { name: 'Edit' })
		.click();

	// Grant read:orders and write:orders on behalf of users, but only write:orders for the client itself
	const dialog = page.getByRole('dialog');
	await dialog
		.getByRole('checkbox', {
			name: `User-delegated access: ${apis.orders.permissions.readOrders.name}`
		})
		.click();
	await dialog
		.getByRole('checkbox', {
			name: `User-delegated access: ${apis.orders.permissions.writeOrders.name}`
		})
		.click();
	await dialog
		.getByRole('checkbox', {
			name: `Client access (M2M): ${apis.orders.permissions.writeOrders.name}`
		})
		.click();
	await dialog.getByRole('button', { name: 'Save' }).click();

	await expect(page.locator('[data-type="success"]')).toHaveText('API access updated successfully');
	// Both subject types keep their own count: 2 / 2 user-delegated, 1 / 2 client access
	const row = page.getByRole('row', { name: apis.orders.name });
	await expect(row).toContainText('2 / 2');
	await expect(row).toContainText('1 / 2');
});

// ---------------------------------------------------------------------------
// Authorization flow with the RFC 8707 resource parameter
// ---------------------------------------------------------------------------

test('Authorization with a resource parameter issues a token audienced to that API', async ({
	page,
	baseURL
}) => {
	const client = oidcClients.immich;
	const api = apis.orders;

	const params = new URLSearchParams({
		client_id: client.id,
		response_type: 'code',
		scope: 'openid email read:orders',
		resource: api.resource,
		redirect_uri: client.callbackUrl,
		state: 'nXx-6Qr-owc1SHBa',
		nonce: 'P1gN3PtpKHJgKUVcLpLjm'
	});

	const callbackUrl = await oidcUtil.interceptCallbackRedirect(
		page,
		new URL(client.callbackUrl).pathname,
		async () => {
			await page.goto(`/authorize?${params.toString()}`);
			await page.getByRole('button', { name: 'Sign in' }).click();
		}
	);
	const code = callbackUrl.searchParams.get('code');
	expect(code).toBeTruthy();

	const res = await oidcUtil.exchangeCode(page, {
		grant_type: 'authorization_code',
		redirect_uri: client.callbackUrl,
		code: code!,
		client_id: client.id,
		client_secret: client.secret
	});
	expect(res.access_token).toBeTruthy();

	const claims = jose.decodeJwt(res.access_token!);
	expect(tokenAudiences(claims)).toContain(api.resource);
	// Because openid was requested alongside the resource, the token also carries the issuer audience so it can still reach /userinfo
	expect(tokenAudiences(claims)).toContain(baseURL);
	expect(tokenScopes(claims)).toContain(api.permissions.readOrders.key);

	// The same token can be presented at userinfo, by the client's explicit opt-in of requesting openid
	const userinfo = await page.request.get('/api/oidc/userinfo', {
		headers: { Authorization: 'Bearer ' + res.access_token }
	});
	expect(userinfo.status()).toBe(200);
});

test('Consent screen shows the friendly permission name for a resource request', async ({
	page
}) => {
	const client = oidcClients.immich;
	const api = apis.orders;

	const params = new URLSearchParams({
		client_id: client.id,
		response_type: 'code',
		scope: 'openid read:orders',
		resource: api.resource,
		redirect_uri: client.callbackUrl,
		state: 'nXx-6Qr-owc1SHBa'
	});
	await page.goto(`/authorize?${params.toString()}`);

	const scopeList = page.getByTestId('scopes');
	await expect(scopeList).toBeVisible();
	// The permission's friendly name is shown, not the raw scope key
	await expect(scopeList.getByText(api.permissions.readOrders.name, { exact: true })).toBeVisible();
});

test('Requesting a custom scope without its resource is rejected with invalid_scope', async ({
	page
}) => {
	const client = oidcClients.immich;

	// The client is allowed read:orders, but it is requested without the resource parameter
	const params = new URLSearchParams({
		client_id: client.id,
		response_type: 'code',
		scope: 'openid read:orders',
		redirect_uri: client.callbackUrl,
		state: 'nXx-6Qr-owc1SHBa'
	});

	const callbackUrl = await oidcUtil.interceptCallbackRedirect(
		page,
		new URL(client.callbackUrl).pathname,
		async () => {
			await page.goto(`/authorize?${params.toString()}`);
		}
	);

	expect(callbackUrl.searchParams.get('error')).toBe('invalid_scope');
	expect(callbackUrl.searchParams.get('state')).toBe('nXx-6Qr-owc1SHBa');
});

// ---------------------------------------------------------------------------
// Separation of user-delegated and client (machine-to-machine) access
// ---------------------------------------------------------------------------

test('Client credentials issues a token for a client-granted permission', async ({ page }) => {
	const client = oidcClients.immich;
	const api = apis.orders;

	// write:orders is granted to Immich for client access
	const res = await oidcUtil.exchangeCode(page, {
		grant_type: 'client_credentials',
		client_id: client.id,
		client_secret: client.secret,
		scope: api.permissions.writeOrders.key,
		resource: api.resource
	});
	expect(res.access_token).toBeTruthy();

	const claims = jose.decodeJwt(res.access_token!);
	expect(tokenAudiences(claims)).toContain(api.resource);
	expect(tokenScopes(claims)).toContain(api.permissions.writeOrders.key);
});

test('Client credentials cannot mint a permission that is only user-delegated', async ({
	page
}) => {
	const client = oidcClients.immich;
	const api = apis.orders;

	// read:orders is only granted for user-delegated access
	const res = await oidcUtil.exchangeCode(page, {
		grant_type: 'client_credentials',
		client_id: client.id,
		client_secret: client.secret,
		scope: api.permissions.readOrders.key,
		resource: api.resource
	});

	expect(res.access_token).toBeFalsy();
	expect(res.error).toBe('invalid_scope');
});

test('Authorization on behalf of a user cannot request a client-only permission', async ({
	page
}) => {
	const client = oidcClients.immich;
	const api = apis.orders;

	// write:orders is only granted for client access, so users cannot be asked to delegate it
	const params = new URLSearchParams({
		client_id: client.id,
		response_type: 'code',
		scope: `openid ${api.permissions.writeOrders.key}`,
		resource: api.resource,
		redirect_uri: client.callbackUrl,
		state: 'nXx-6Qr-owc1SHBa'
	});

	const callbackUrl = await oidcUtil.interceptCallbackRedirect(
		page,
		new URL(client.callbackUrl).pathname,
		async () => {
			await page.goto(`/authorize?${params.toString()}`);
		}
	);

	// The authorize endpoint collapses every resource-targeted scope/resource failure into a generic invalid_request
	expect(callbackUrl.searchParams.get('error')).toBe('invalid_request');
	expect(callbackUrl.searchParams.get('state')).toBe('nXx-6Qr-owc1SHBa');
});