import { afterEach, beforeEach, expect, it, vi } from 'vitest';
import { newFixture, type Fixture } from '../helpers/fixture.js';

let fixture: Fixture;
beforeEach(async () => { vi.resetModules(); fixture = await newFixture([]); });
afterEach(async () => { await fixture.cleanup(); });

it('indexes campaign cascades and beta evidence on fresh and reopened databases', async () => {
    const { db, closeDb } = await import('../../src/lib/server/db/index.js');
    for (let pass = 0; pass < 2; pass++) {
        const handle = db();
        for (const [query, index] of [
            ['SELECT id FROM staged_file_changes WHERE deployment_file_id = 1', 'idx_staged_files_deployment_file'],
            ['SELECT id FROM beta_test_runs WHERE beta_id = 1 AND revision = 2', 'idx_beta_test_runs_beta_revision']
        ]) {
            const plan = handle.prepare(`EXPLAIN QUERY PLAN ${query}`).all() as { detail: string }[];
            expect(plan.some(row => row.detail.includes(index))).toBe(true);
        }
        expect(handle.pragma('foreign_key_check')).toEqual([]);
        closeDb();
    }
});

it('covers every foreign key child prefix, including lazy host and library schemas', async () => {
    const { db } = await import('../../src/lib/server/db/index.js');
    const { ensureHostSchema } = await import('../../src/lib/server/hosts/schema.js');
    const { ensureGameFileSchema } = await import('../../src/lib/server/game-files/schema.js');
    const handle = db();
    ensureHostSchema(handle); ensureGameFileSchema(handle);
    const tables = handle.prepare("SELECT name FROM sqlite_master WHERE type='table'").all() as { name: string }[];
    const missing: string[] = [];
    for (const { name } of tables) {
        const foreignKeys = handle.pragma(`foreign_key_list(${name})`) as { from: string; seq: number }[];
        const indexes = handle.pragma(`index_list(${name})`) as { name: string; partial: number }[];
        const prefixes = indexes.filter(index => !index.partial).map(index =>
            (handle.pragma(`index_info(${index.name})`) as { name: string }[])[0]?.name);
        const columns = handle.pragma(`table_info(${name})`) as { name: string; type: string; pk: number }[];
        if (columns.filter(column => column.pk).length === 1) prefixes.push(columns.find(column => column.pk)!.name);
        for (const key of foreignKeys.filter(key => key.seq === 0)) {
            if (!prefixes.includes(key.from)) missing.push(`${name}.${key.from}`);
        }
    }
    expect(missing).toEqual([]);
});