import assert from 'node:assert/strict';
import test from 'node:test';
import { agentJobInternals, createAgentJobService } from './mindspace-agent-jobs.mjs';

function createMockPool(state) {
  const runQuery = async (sql, params = []) => {
    if (sql.includes('FROM h5_agent_jobs j') && sql.includes('idempotency_key')) {
      const row = state.jobs.find(
        (job) => job.user_id === params[0] && job.idempotency_key === params[1],
      );
      if (!row) return [[]];
      const category = state.categories.find((item) => item.id === row.output_category_id);
      return [[{ ...row, output_category_code: category?.category_code ?? null }]];
    }
    if (sql.includes('FROM h5_space_categories') && sql.includes("category_code = 'draft'")) {
      const row = state.categories.find(
        (item) => item.user_id === params[0] && item.category_code === 'draft',
      );
      return [row ? [row] : []];
    }
    if (sql.includes('FROM h5_space_categories') && sql.includes('WHERE id = ? AND user_id = ?')) {
      const row = state.categories.find(
        (item) => item.id === params[0] && item.user_id === params[1],
      );
      return [row ? [row] : []];
    }
    if (sql.includes('FROM h5_assets a') && sql.includes('a.id IN')) {
      const userId = params[0];
      const ids = new Set(params.slice(1));
      return [[
        ...state.assets
          .filter((asset) => asset.user_id === userId && ids.has(asset.id) && asset.status !== 'deleted')
          .map((asset) => ({
            ...asset,
            scan_status:
              state.assetVersions.find((version) => version.id === asset.current_version_id)?.scan_status ??
              'passed',
          })),
      ]];
    }
    if (sql.includes('INSERT INTO h5_agent_jobs')) {
      state.jobs.push({
        id: params[0],
        user_id: params[1],
        job_type: params[2],
        instruction: params[3],
        permission_scope: params[4],
        user_context_json: params[5],
        output_category_id: params[6],
        output_type: params[7],
        status: 'queued',
        idempotency_key: params[8],
        progress_json: params[9],
        queued_at: params[10],
        expires_at: params[11],
        updated_at: params[12],
        max_output_bytes: params[13],
        result_page_id: null,
        result_asset_id: null,
        error_code: null,
        error_message: null,
        started_at: null,
        heartbeat_at: null,
        completed_at: null,
        job_token_hash: null,
      });
      return [[]];
    }
    if (sql.includes('INSERT INTO h5_agent_job_assets')) {
      state.jobAssets.push({
        id: params[0],
        job_id: params[1],
        asset_id: params[2],
        asset_version_id: params[3],
        permission: 'read',
        created_at: params[4],
      });
      return [[]];
    }
    if (sql.includes('FROM h5_agent_jobs j') && sql.includes('WHERE j.id = ?')) {
      const row = state.jobs.find(
        (job) => job.id === params[0] && (params[1] == null || job.user_id === params[1]),
      );
      if (!row) return [[]];
      const category = state.categories.find((item) => item.id === row.output_category_id);
      return [[{ ...row, output_category_code: category?.category_code ?? null }]];
    }
    if (sql.includes('FROM h5_agent_job_assets ja') && sql.includes('ORDER BY ja.created_at ASC')) {
      const jobId = params[0];
      return [[
        ...state.jobAssets
          .filter((binding) => binding.job_id === jobId)
          .map((binding) => {
            const asset = state.assets.find((item) => item.id === binding.asset_id);
            const version = state.assetVersions.find((item) => item.id === binding.asset_version_id);
            return {
              asset_id: binding.asset_id,
              asset_version_id: binding.asset_version_id,
              permission: binding.permission,
              display_name: asset?.display_name ?? '',
              mime_type: asset?.mime_type ?? '',
              status: asset?.status ?? 'ready',
              scan_status: version?.scan_status ?? 'passed',
            };
          }),
      ]];
    }
    if (sql.includes('WHERE id = ? AND user_id = ?') && sql.includes('FROM h5_agent_jobs')) {
      const row = state.jobs.find((job) => job.id === params[0] && job.user_id === params[1]);
      return [row ? [row] : []];
    }
    if (sql.includes("SET status = 'running'")) {
      const row = state.jobs.find((job) => job.id === params[6]);
      row.status = 'running';
      row.started_at ??= params[0];
      row.heartbeat_at = params[1];
      row.updated_at = params[2];
      row.expires_at = params[3];
      row.progress_json = params[4];
      row.job_token_hash = params[5];
      return [[]];
    }
    if (sql.includes('SET heartbeat_at = ?')) {
      const row = state.jobs.find((job) => job.id === params[4]);
      row.heartbeat_at = params[0];
      row.updated_at = params[1];
      row.expires_at = params[2];
      row.progress_json = params[3];
      return [[]];
    }
    if (sql.includes("SET status = 'completed'")) {
      const row = state.jobs.find((job) => job.id === params[4]);
      row.status = 'completed';
      row.result_page_id = params[0];
      row.completed_at = params[1];
      row.updated_at = params[2];
      row.heartbeat_at = null;
      row.job_token_hash = null;
      row.progress_json = params[3];
      return [[]];
    }
    if (sql.includes("SET status = 'failed'")) {
      const row = state.jobs.find((job) => job.id === params[5]);
      row.status = 'failed';
      row.error_code = params[0];
      row.error_message = params[1];
      row.completed_at = params[2];
      row.updated_at = params[3];
      row.heartbeat_at = null;
      row.job_token_hash = null;
      row.progress_json = params[4];
      return [[]];
    }
    if (sql.includes("SET status = 'queued'")) {
      const row = state.jobs.find((job) => job.id === params[3]);
      row.status = 'queued';
      row.progress_json = params[0];
      row.started_at = null;
      row.completed_at = null;
      row.error_code = null;
      row.error_message = null;
      row.result_page_id = null;
      row.result_asset_id = null;
      row.job_token_hash = null;
      row.heartbeat_at = null;
      row.expires_at = params[1];
      row.updated_at = params[2];
      return [[]];
    }
    if (sql.includes("SET status = 'cancelled'")) {
      const row = state.jobs.find((job) => job.id === params[4]);
      row.status = 'cancelled';
      row.completed_at = params[0];
      row.expires_at = params[1];
      row.updated_at = params[2];
      row.job_token_hash = null;
      row.heartbeat_at = null;
      row.progress_json = params[3];
      return [[]];
    }
    if (sql.includes('FROM h5_agent_job_assets ja') && sql.includes('ja.asset_id = ?')) {
      const binding = state.jobAssets.find(
        (item) => item.job_id === params[0] && item.asset_id === params[1],
      );
      if (!binding) return [[]];
      const asset = state.assets.find((item) => item.id === binding.asset_id);
      const version = state.assetVersions.find((item) => item.id === binding.asset_version_id);
      return [[{
        id: asset.id,
        display_name: asset.display_name,
        mime_type: asset.mime_type,
        status: asset.status,
        asset_version_id: binding.asset_version_id,
        storage_key: version.storage_key,
        scan_status: version.scan_status,
      }]];
    }
    throw new Error(`Unhandled SQL: ${sql}`);
  };

  return {
    query: runQuery,
    async getConnection() {
      return {
        query: runQuery,
        async beginTransaction() {},
        async commit() {},
        async rollback() {},
        release() {},
      };
    },
  };
}

test('normalizeJobInput validates required fields', () => {
  const result = agentJobInternals.normalizeJobInput({
    jobType: 'generate_page',
    instruction: '  生成周报  ',
    outputType: 'page_draft',
    allowedAssetIds: ['a1', 'a1', 'a2'],
  });

  assert.equal(result.instruction, '生成周报');
  assert.deepEqual(result.allowedAssetIds, ['a1', 'a2']);
  assert.throws(
    () =>
      agentJobInternals.normalizeJobInput({
        jobType: 'unknown',
        instruction: 'x',
        outputType: 'page_draft',
        allowedAssetIds: ['a1'],
      }),
    { code: 'invalid_agent_job_input' },
  );
});

test('agent job lifecycle creates, claims, heartbeats, and completes into a page draft', async () => {
  const state = {
    categories: [{ id: 'cat-draft', user_id: 'user-1', category_code: 'draft' }],
    assets: [{
      id: 'asset-1',
      user_id: 'user-1',
      current_version_id: 'ver-1',
      display_name: '日报.xlsx',
      mime_type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
      status: 'ready',
    }],
    assetVersions: [{
      id: 'ver-1',
      asset_id: 'asset-1',
      storage_key: 'users/user-1/assets/asset-1/versions/ver-1',
      scan_status: 'passed',
    }],
    jobs: [],
    jobAssets: [],
  };
  const createdPages = [];
  let seq = 0;
  const service = createAgentJobService(createMockPool(state), {
    idFactory: () => `id-${++seq}`,
    nowFactory: () => 1_700_000_000_000 + seq,
    pageService: {
      async createFromAgent(userId, input, source) {
        createdPages.push({ userId, input, source });
        return { id: 'page-1' };
      },
    },
  });

  const job = await service.createJob('user-1', {
    jobType: 'generate_page',
    instruction: '根据日报生成周报页面',
    outputType: 'page_draft',
    allowedAssetIds: ['asset-1'],
  });
  assert.equal(job.status, 'queued');
  assert.equal(job.assets[0].assetId, 'asset-1');

  const claim = await service.claimJob(job.id);
  assert.equal(claim.allowedAssets[0].assetId, 'asset-1');
  assert.equal(state.jobs[0].status, 'running');

  const heartbeat = await service.heartbeat(job.id, claim.jobToken, {
    stage: 'ai_analysis',
    message: '正在分析资产内容',
  });
  assert.equal(heartbeat.progress.stage, 'ai_analysis');

  const completed = await service.completeJob(job.id, claim.jobToken, {
    title: '项目周报',
    summary: '本周进展',
    content: '# 项目周报\n\n一切正常。',
    sourceAssetIds: ['asset-1'],
  });
  assert.equal(completed.status, 'completed');
  assert.equal(completed.resultPageId, 'page-1');
  assert.equal(createdPages[0].userId, 'user-1');
  assert.equal(createdPages[0].source.jobId, job.id);
  assert.deepEqual(createdPages[0].source.assetIds, ['asset-1']);
});

test('retry resets a retryable failed job back to queued', async () => {
  const state = {
    categories: [{ id: 'cat-draft', user_id: 'user-1', category_code: 'draft' }],
    assets: [],
    assetVersions: [],
    jobs: [{
      id: 'job-1',
      user_id: 'user-1',
      job_type: 'generate_page',
      instruction: 'retry me',
      permission_scope: '{}',
      user_context_json: '{}',
      output_category_id: 'cat-draft',
      output_type: 'page_draft',
      status: 'failed',
      idempotency_key: null,
      progress_json: '{"stage":"failed"}',
      queued_at: 1,
      expires_at: 2,
      updated_at: 3,
      max_output_bytes: 1024,
      result_page_id: null,
      result_asset_id: null,
      error_code: 'worker_crashed',
      error_message: 'crashed',
      started_at: 4,
      heartbeat_at: null,
      completed_at: 5,
      job_token_hash: null,
    }],
    jobAssets: [],
  };
  const service = createAgentJobService(createMockPool(state), {
    nowFactory: () => 42,
    pageService: { async createFromAgent() { return { id: 'page-x' }; } },
  });

  const retried = await service.retryJob('user-1', 'job-1');
  assert.equal(retried.status, 'queued');
  assert.equal(retried.errorCode, null);
});

test('listJobs returns paginated items with total count', async () => {
  const state = {
    categories: [{ id: 'cat-draft', user_id: 'user-1', category_code: 'draft' }],
    jobs: Array.from({ length: 3 }, (_, index) => ({
      id: `job-${index}`,
      user_id: 'user-1',
      job_type: 'generate_page',
      instruction: `task-${index}`,
      permission_scope: '{}',
      user_context_json: '{}',
      output_category_id: 'cat-draft',
      output_type: 'page_draft',
      output_category_code: 'draft',
      status: 'completed',
      idempotency_key: `key-${index}`,
      progress_json: '{"stage":"completed"}',
      queued_at: 100 - index,
      started_at: 100 - index,
      completed_at: 100 - index,
      expires_at: null,
      updated_at: 100 - index,
      max_output_bytes: 1024,
      result_page_id: null,
      result_asset_id: null,
      error_code: null,
      error_message: null,
      heartbeat_at: null,
      job_token_hash: null,
    })),
    jobAssets: [],
    assets: [],
    assetVersions: [],
  };
  const pool = {
    async query(sql, params = []) {
      if (sql.includes('COUNT(*) AS total FROM h5_agent_jobs')) {
        return [[{ total: state.jobs.length }]];
      }
      if (sql.includes('FROM h5_agent_jobs j') && sql.includes('ORDER BY')) {
        const offset = Number(sql.match(/OFFSET (\d+)/)?.[1] ?? 0);
        const limit = Number(sql.match(/LIMIT (\d+)/)?.[1] ?? 20);
        const rows = state.jobs.slice(offset, offset + limit);
        return [rows];
      }
      if (sql.includes('FROM h5_agent_job_assets ja')) {
        return [[]];
      }
      return [[]];
    },
  };
  const service = createAgentJobService(pool, { nowFactory: () => 100 });
  const page = await service.listJobs('user-1', { limit: 2, offset: 1 });
  assert.equal(page.total, 3);
  assert.equal(page.items.length, 2);
  assert.equal(page.offset, 1);
  assert.equal(page.hasMore, false);
});