import type {
  GeneratedRun,
  StoreGeneratedRunResult,
} from '@devrunbook/application'
import { describe, expect, it } from 'vitest'

import {
  assertGeneratedRunPersistenceIntegrity,
  decodeGeneratedRunCursor,
  DrizzleGeneratedRunStore,
  encodeGeneratedRunCursor,
  type GeneratedRunTransaction,
  type GeneratedRunTransactionRunner,
} from './generated-run-store'

function run(overrides: Partial<GeneratedRun> = {}): GeneratedRun {
  return {
    id: '00000000-0000-4000-8000-000000000101',
    workspaceId: '00000000-0000-4000-8000-000000000102',
    generatedBy: '00000000-0000-4000-8000-000000000103',
    sourceDraftId: null,
    playbookVersionId: '00000000-0000-4000-8000-000000000104',
    snapshots: {
      playbook: { slug: 'root-cause-bugfix' },
      repositoryProfile: null,
      normalizedInput: { problem: 'broken result' },
      policy: { autonomy: 'verify' },
      provenance: [],
    },
    lint: { exportReadiness: 'ready', findings: [] },
    renderedPrompt: '# Task\n',
    renderDigest: 'a'.repeat(64),
    idempotencyKey: 'request-1',
    generatedAt: '2026-07-27T12:00:00.000Z',
    ...overrides,
  }
}

class MemoryGeneratedRunRunner implements GeneratedRunTransactionRunner {
  stored: GeneratedRun | null = null
  locks: string[] = []
  audits: GeneratedRun[] = []

  async run<T>(
    work: (transaction: GeneratedRunTransaction) => Promise<T>,
  ): Promise<T> {
    const transaction: GeneratedRunTransaction = {
      acquireIdempotencyLock: async (workspaceId, key) => {
        this.locks.push(`${workspaceId}:${key}`)
      },
      findByIdempotencyKey: async (workspaceId, key) =>
        this.stored?.workspaceId === workspaceId &&
        this.stored.idempotencyKey === key
          ? this.stored
          : null,
      insert: async (candidate) => {
        this.stored = candidate
        return candidate
      },
      appendCreationAudit: async (candidate) => {
        this.audits.push(candidate)
      },
    }
    return work(transaction)
  }
}

describe('DrizzleGeneratedRunStore', () => {
  it('serializes creation and returns an exact retry without inserting again', async () => {
    const runner = new MemoryGeneratedRunRunner()
    const store = new DrizzleGeneratedRunStore(runner)
    const candidate = run()

    await expect(store.createIdempotently(candidate)).resolves.toEqual({
      run: candidate,
      created: true,
    } satisfies StoreGeneratedRunResult)
    await expect(store.createIdempotently(candidate)).resolves.toEqual({
      run: candidate,
      created: false,
    } satisfies StoreGeneratedRunResult)
    expect(runner.locks).toHaveLength(2)
    expect(runner.audits).toEqual([candidate])
  })

  it('rejects reuse of the key for different immutable input', async () => {
    const runner = new MemoryGeneratedRunRunner()
    const store = new DrizzleGeneratedRunStore(runner)
    await store.createIdempotently(run())

    await expect(
      store.createIdempotently(
        run({
          snapshots: { ...run().snapshots, policy: { autonomy: 'repair' } },
        }),
      ),
    ).rejects.toMatchObject({ code: 'generated_run_idempotency_conflict' })
  })

  it.each([
    ['digest', { renderDigest: '0'.repeat(64) }],
    ['idempotency key', { idempotencyKey: '' }],
    [
      'snapshot JSON',
      {
        snapshots: {
          ...run().snapshots,
          normalizedInput: { invalid: undefined },
        },
      },
    ],
    [
      'lint JSON',
      {
        lint: { exportReadiness: 'ready', findings: [{ severity: 'error' }] },
      },
    ],
    [
      'repository snapshot identity',
      {
        snapshots: {
          ...run().snapshots,
          repositoryProfile: {
            repositoryId: '00000000-0000-4000-8000-000000000105',
          },
        },
      },
    ],
  ])('rejects corrupt persisted %s', (_, changes) => {
    expect(() =>
      assertGeneratedRunPersistenceIntegrity({
        ...run(),
        ...(changes as Partial<GeneratedRun>),
      }),
    ).toThrowError(
      expect.objectContaining({ code: 'generated_run_persistence_corrupt' }),
    )
  })

  it('round-trips the stable generatedAt and ID cursor', () => {
    const cursor = {
      generatedAt: '2026-07-27T12:00:00.000Z',
      id: '00000000-0000-4000-8000-000000000101',
    }
    expect(decodeGeneratedRunCursor(encodeGeneratedRunCursor(cursor))).toEqual(
      cursor,
    )
  })

  it.each([
    '',
    'not-base64-json',
    Buffer.from('{}').toString('base64url'),
    Buffer.from(
      JSON.stringify({ generatedAt: 'invalid', id: run().id }),
    ).toString('base64url'),
    Buffer.from(
      JSON.stringify({ generatedAt: run().generatedAt, id: 'not-a-uuid' }),
    ).toString('base64url'),
  ])('rejects malformed history cursor %s', (cursor) => {
    expect(() => decodeGeneratedRunCursor(cursor)).toThrowError(
      expect.objectContaining({ code: 'generated_run_cursor_invalid' }),
    )
  })

  it('rejects invalid history limits and filters before database access', async () => {
    const store = new DrizzleGeneratedRunStore(new MemoryGeneratedRunRunner())
    await expect(
      store.listForWorkspace(run().workspaceId, { limit: 0 }),
    ).rejects.toMatchObject({ code: 'generated_run_list_limit_invalid' })
    await expect(
      store.listForWorkspace(run().workspaceId, { playbookSlug: '../other' }),
    ).rejects.toMatchObject({ code: 'generated_run_filter_invalid' })
    await expect(
      store.listForWorkspace(run().workspaceId, {
        repositoryId: 'not-a-uuid',
      }),
    ).rejects.toMatchObject({ code: 'generated_run_filter_invalid' })
    await expect(
      store.listForWorkspace(run().workspaceId, { cursor: 'invalid' }),
    ).rejects.toMatchObject({ code: 'generated_run_cursor_invalid' })
  })
})