import { Hono } from 'hono';
import { describe, expect, it } from 'vitest';
import { StorageAccountOnlineError } from '../src/webui/storage-management';
import {
    ALL_ACCOUNTS_CONFIRMATION,
    registerStorageRoutes,
    type StorageRouteDependencies,
} from '../src/webui/storage-routes';
import { StorageSettingsTransactionError } from '../src/webui/storage-settings';

const settingsState = {
    saved: { logMaxTotalMb: 1024, logRetainDays: 7, logPerUin: false },
    effective: { logMaxTotalMb: 1024, logRetainDays: 7, logPerUin: false },
    envOverrides: [],
};

const snapshot = {
    logs: {
        state: 'healthy' as const,
        totalBytes: 100,
        maxTotalBytes: 1024 * 1024 * 1024,
        retainDays: 7,
        perUinEnabled: false,
        fileCount: 1,
        activeFileCount: 1,
        droppedLines: 0,
    },
    temporary: { totalBytes: 20, fileCount: 2, activeItemCount: 0 },
    accounts: [],
    totals: {
        logsBytes: 100,
        temporaryBytes: 20,
        accountDataBytes: 0,
        managedBytes: 120,
    },
};

function createDependencies(
    overrides: Partial<StorageRouteDependencies> = {},
): StorageRouteDependencies {
    return {
        storage: {
            snapshot: () => snapshot,
            clearLogs: async () => ({
                deletedFiles: 1,
                freedBytes: 90,
                failures: [],
                status: { ...snapshot.logs, totalBytes: 10 },
            }),
            clearTemporary: () => ({
                deletedFiles: 2,
                freedBytes: 20,
                skippedActiveItems: 0,
                failures: [],
            }),
            clearAccountData: (category, uin) => ({
                category: category as 'messages' | 'media' | 'reactions',
                uins: [uin],
                deletedFiles: 1,
                freedBytes: 10,
                failures: [],
            }),
            clearAllAccountData: (category) => ({
                category: category as 'messages' | 'media' | 'reactions',
                uins: ['12345', '67890'],
                deletedFiles: 2,
                freedBytes: 20,
                failures: [],
            }),
        },
        settings: {
            read: () => settingsState,
            update: async () => ({
                settings: settingsState,
                status: snapshot.logs,
            }),
        },
        audit: () => undefined,
        reportError: () => undefined,
        now: () => new Date('2026-07-24T04:00:00.000Z'),
        ...overrides,
    };
}

function createApp(deps: StorageRouteDependencies): Hono {
    const app = new Hono();
    registerStorageRoutes(app, deps);
    return app;
}

describe('storage management routes', () => {
    it('returns settings and a path-free storage snapshot', async () => {
        const response = await createApp(createDependencies()).request('/api/system/storage');

        expect(response.status).toBe(200);
        const body = await response.json();
        expect(body).toEqual({ settings: settingsState, snapshot, lastCleanup: null });
        expect(JSON.stringify(body)).not.toContain('/private/');
    });

    it('updates log settings and returns the refreshed snapshot', async () => {
        let received: unknown;
        const deps = createDependencies({
            settings: {
                read: () => settingsState,
                update: async (body) => {
                    received = body;
                    return { settings: settingsState, status: snapshot.logs };
                },
            },
        });
        const response = await createApp(deps).request('/api/system/storage/settings', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({ logRetainDays: 0 }),
        });

        expect(response.status).toBe(200);
        expect(received).toEqual({ logRetainDays: 0 });
        await expect(response.json()).resolves.toMatchObject({
            success: true,
            settings: settingsState,
            snapshot,
        });
    });

    it('reports both the failed settings operation and every failed rollback', async () => {
        const operationError = new Error('apply failed');
        const rollbackError = new Error('rollback failed');
        const reports: Array<{ operation: string; error: unknown }> = [];
        const deps = createDependencies({
            settings: {
                read: () => settingsState,
                update: async () => {
                    throw new StorageSettingsTransactionError(
                        'transaction failed',
                        operationError,
                        [rollbackError],
                    );
                },
            },
            reportError: (operation, error) => reports.push({ operation, error }),
        });

        const response = await createApp(deps).request('/api/system/storage/settings', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({ logRetainDays: 0 }),
        });

        expect(response.status).toBe(500);
        expect(reports).toEqual([
            {
                operation: 'update log storage settings',
                error: expect.any(StorageSettingsTransactionError),
            },
            { operation: 'update log storage settings operation', error: operationError },
            { operation: 'rollback log storage settings step=1', error: rollbackError },
        ]);
    });

    it('serializes settings changes and cleanup operations', async () => {
        let releaseSettings!: () => void;
        let notifySettingsStarted!: () => void;
        const settingsGate = new Promise<void>((resolve) => {
            releaseSettings = resolve;
        });
        const settingsStarted = new Promise<void>((resolve) => {
            notifySettingsStarted = resolve;
        });
        let cleanupCalls = 0;
        const deps = createDependencies({
            settings: {
                read: () => settingsState,
                update: async () => {
                    notifySettingsStarted();
                    await settingsGate;
                    return { settings: settingsState, status: snapshot.logs };
                },
            },
        });

        deps.storage.clearTemporary = () => {
            cleanupCalls += 1;
            return {
                deletedFiles: 0,
                freedBytes: 0,
                skippedActiveItems: 0,
                failures: [],
            };
        };

        const app = createApp(deps);

        const settingsRequest = app.request('/api/system/storage/settings', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({ logRetainDays: 0 }),
        });
        await settingsStarted;
        const cleanupRequest = app.request('/api/system/storage/cleanup', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({ scope: 'temporary' }),
        });
        await Promise.resolve();
        expect(cleanupCalls).toBe(0);

        releaseSettings();
        await expect(settingsRequest).resolves.toMatchObject({ status: 200 });
        await expect(cleanupRequest).resolves.toMatchObject({ status: 200 });
        expect(cleanupCalls).toBe(1);
    });

    it('rejects arbitrary paths, unknown scopes, and missing cleanup fields', async () => {
        const app = createApp(createDependencies());

        for (const body of [
            { scope: 'logs', path: '/etc' },
            { scope: 'everything' },
            { scope: 'account', category: 'messages', uin: '../12345' },
            { scope: 'account', category: '../config', uin: '12345' },
            { scope: 'account', category: 'messages' },
        ]) {
            const response = await app.request('/api/system/storage/cleanup', {
                method: 'POST',
                headers: { 'content-type': 'application/json' },
                body: JSON.stringify(body),
            });
            expect(response.status, JSON.stringify(body)).toBe(400);
        }
    });

    it('requires the fixed second confirmation for all-account cleanup', async () => {
        const app = createApp(createDependencies());
        const rejected = await app.request('/api/system/storage/cleanup', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({
                scope: 'allAccounts',
                category: 'messages',
                confirmation: 'yes',
            }),
        });
        expect(rejected.status).toBe(400);

        const accepted = await app.request('/api/system/storage/cleanup', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({
                scope: 'allAccounts',
                category: 'messages',
                confirmation: ALL_ACCOUNTS_CONFIRMATION,
            }),
        });
        expect(accepted.status).toBe(200);
        await expect(accepted.json()).resolves.toMatchObject({
            success: true,
            scope: 'allAccounts',
            cleanup: { uins: ['12345', '67890'], deletedFiles: 2 },
        });
    });

    it('maps an online-account preflight failure to conflict', async () => {
        const deps = createDependencies();

        deps.storage.clearAccountData = () => {
            throw new StorageAccountOnlineError(['12345']);
        };

        const response = await createApp(deps).request('/api/system/storage/cleanup', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({ scope: 'account', category: 'messages', uin: '12345' }),
        });

        expect(response.status).toBe(409);
        await expect(response.json()).resolves.toMatchObject({
            success: false,
            onlineUins: ['12345'],
        });
    });

    it('returns HTTP 500 with the structured partial result when deletion fails', async () => {
        const audits: unknown[] = [];
        const reports: Array<{ operation: string; error: unknown }> = [];
        const deps = createDependencies({
            audit: (event) => audits.push(event),
            reportError: (operation, error) => reports.push({ operation, error }),
        });
        deps.storage.clearTemporary = () => ({
            deletedFiles: 1,
            freedBytes: 5,
            skippedActiveItems: 0,
            failures: [{ item: 'locked.bin', message: 'permission denied' }],
        });
        const app = createApp(deps);
        const response = await app.request('/api/system/storage/cleanup', {
            method: 'POST',
            headers: { 'content-type': 'application/json' },
            body: JSON.stringify({ scope: 'temporary' }),
        });

        expect(response.status).toBe(500);
        await expect(response.json()).resolves.toMatchObject({
            success: false,
            cleanup: {
                deletedFiles: 1,
                failures: [{ item: 'locked.bin', message: 'permission denied' }],
            },
            lastCleanup: {
                failureCount: 1,
                failures: [{ item: 'locked.bin', message: 'permission denied' }],
            },
            snapshot,
        });
        expect(audits).toEqual([
            {
                scope: 'temporary',
                accountScope: 'global',
                deletedFiles: 1,
                freedBytes: 5,
                failureCount: 1,
            },
        ]);
        expect(reports).toEqual([
            {
                operation: 'clean storage scope=temporary item=locked.bin',
                error: expect.objectContaining({ message: 'permission denied' }),
            },
        ]);

        const refreshed = await app.request('/api/system/storage');
        await expect(refreshed.json()).resolves.toMatchObject({
            lastCleanup: {
                at: '2026-07-24T04:00:00.000Z',
                scope: 'temporary',
                accountScope: 'global',
                deletedFiles: 1,
                freedBytes: 5,
                failureCount: 1,
                skippedActiveItems: 0,
                failures: [{ item: 'locked.bin', message: 'permission denied' }],
            },
        });
    });
});