'use strict';

const assert = require('assert/strict');
  const {
    APPLIED_ACTION_STATUSES,
    CONFIRMING_EVIDENCE_TYPES,
    createJourneyDefinition,
    createJourneyState,
    applyJourneyFacts,
    isStageComplete,
    planAppliedAction,
    executeAppliedAction,
    confirmAppliedAction,
    serializeJourneyState,
    buildConversationStateSnapshot,
  } = require('../mcp/src/core/agent-conversation-journey');

function confirmation(type, id, at) {
  return { type, id, at, success: true };
}

function main() {
  const definition = createJourneyDefinition({
    id: 'generic-consultation',
    initialStageId: 'understand',
    stages: [
      { id: 'understand', requiredFacts: ['goal'] },
      { id: 'qualify', requiredFacts: ['constraints.budget', 'constraints.timeline'] },
      { id: 'recommend', requiredFacts: ['selection'] },
      { id: 'commit', requiredFacts: ['commitment'] },
    ],
  });
  assert.deepEqual(APPLIED_ACTION_STATUSES, ['planned', 'executed', 'confirmed']);
  assert.deepEqual(CONFIRMING_EVIDENCE_TYPES, ['send', 'tool', 'handoff']);

  const initial = createJourneyState(definition, { at: '2026-08-06T01:00:00.000Z' });
  const observed = applyJourneyFacts(definition, initial, {
    constraints: { timeline: 'soon', budget: 100 },
    goal: 'compare options',
  }, { at: '2026-08-06T01:01:00.000Z' });
  assert.equal(initial.facts.goal, undefined);
  assert.equal(observed.currentStageId, 'understand');
  assert.equal(isStageComplete(definition, observed, 'qualify'), true);

  const planned = planAppliedAction(definition, observed, {
    key: 'reply:message-1',
    kind: 'reply',
    transition: { mode: 'auto' },
    payload: { draftId: 'draft-1' },
    at: '2026-08-06T01:02:00.000Z',
  });
  assert.equal(planned.currentStageId, 'understand');
  assert.equal(planned.appliedActions[0].status, 'planned');

  const executed = executeAppliedAction(definition, planned, {
    key: 'reply:message-1',
    evidence: { type: 'send', id: 'attempt-1', success: false },
    at: '2026-08-06T01:03:00.000Z',
  });
  assert.equal(executed.currentStageId, 'understand');
  assert.equal(executed.appliedActions[0].status, 'executed');

  assert.throws(() => confirmAppliedAction(definition, executed, {
    key: 'reply:message-1',
    evidence: { type: 'draft', id: 'draft-1', success: true },
  }), /Unsupported action evidence type/);
  assert.throws(() => confirmAppliedAction(definition, executed, {
    key: 'reply:message-1',
    evidence: { type: 'send', id: 'message-1', success: false },
  }), /successful evidence/);

  const advanced = confirmAppliedAction(definition, executed, {
    key: 'reply:message-1',
    evidence: confirmation('send', 'message-1', '2026-08-06T01:04:00.000Z'),
  });
  assert.equal(advanced.currentStageId, 'recommend');
  assert.equal(advanced.appliedActions[0].status, 'confirmed');
  assert.deepEqual(advanced.appliedActions[0].transitionResult.skippedStageIds, ['qualify']);
  assert(advanced.stageHistory.some(entry => entry.kind === 'skip' && entry.stageId === 'qualify'));

  const backPlanned = planAppliedAction(definition, advanced, {
    key: 'handoff:requalify',
    kind: 'human_handoff',
    transition: { mode: 'back', targetStageId: 'qualify' },
  });
  const backed = confirmAppliedAction(definition, backPlanned, {
    key: 'handoff:requalify',
    evidence: confirmation('handoff', 'handoff-1', '2026-08-06T01:05:00.000Z'),
  });
  assert.equal(backed.currentStageId, 'qualify');
  assert.equal(backed.stageHistory.at(-1).kind, 'back');

  const reenterPlanned = planAppliedAction(definition, backed, {
    key: 'tool:refresh-qualification',
    kind: 'refresh',
    transition: { mode: 'reenter', targetStageId: 'qualify' },
  });
  const reentered = confirmAppliedAction(definition, reenterPlanned, {
    key: 'tool:refresh-qualification',
    evidence: confirmation('tool', 'tool-run-1', '2026-08-06T01:06:00.000Z'),
  });
  assert.equal(reentered.currentStageId, 'qualify');
  assert.equal(reentered.stageHistory.at(-1).kind, 'reenter');

  const skipPlanned = planAppliedAction(definition, reentered, {
    key: 'reply:direct-commit',
    kind: 'reply',
    transition: { mode: 'to', targetStageId: 'commit' },
  });
  const skipped = confirmAppliedAction(definition, skipPlanned, {
    key: 'reply:direct-commit',
    evidence: confirmation('send', 'message-2', '2026-08-06T01:07:00.000Z'),
  });
  assert.equal(skipped.currentStageId, 'commit');
  assert.deepEqual(skipped.appliedActions.at(-1).transitionResult.skippedStageIds, ['recommend']);

  const deduped = planAppliedAction(definition, skipped, {
    key: 'reply:direct-commit',
    kind: 'reply',
    transition: { mode: 'to', targetStageId: 'commit' },
  });
  assert.equal(deduped.appliedActions.length, skipped.appliedActions.length);
  assert.equal(deduped.sequence, skipped.sequence);
  assert.throws(() => planAppliedAction(definition, skipped, {
    key: 'reply:direct-commit',
    kind: 'different-action',
    transition: { mode: 'none' },
  }), /key conflict/);

  const serialized = serializeJourneyState(skipped);
  assert.equal(serialized, serializeJourneyState(JSON.parse(serialized)));
  const reordered = {
    ...skipped,
    facts: {
      goal: skipped.facts.goal,
      constraints: {
        budget: skipped.facts.constraints.budget,
        timeline: skipped.facts.constraints.timeline,
      },
    },
  };
  assert.equal(serialized, serializeJourneyState(reordered));
  assert(skipped.appliedActions.every(action => APPLIED_ACTION_STATUSES.includes(action.status)));

  const snapshot = buildConversationStateSnapshot({
    inboundContent: '预算 20 万，想预约明天下午到店',
    messages: [{ role: 'user', content: '想了解企业服务收费' }],
    profile: { budget: '20万' },
  });
  assert.equal(snapshot.knownConstraints.budget.source, 'conversation');
  assert.equal(snapshot.highIntent.active, true);
  assert.equal(snapshot.highIntent.kind, 'schedule_intake');
  assert(snapshot.knownFields.includes('budget'));
  assert(snapshot.knownFields.includes('appointmentIntent'));

  process.stdout.write(`${JSON.stringify({
    status: 'ok',
    checks: 30,
    finalStage: skipped.currentStageId,
    actions: skipped.appliedActions.length,
    historyEntries: skipped.stageHistory.length,
    snapshotFields: snapshot.knownFields,
  }, null, 2)}\n`);
}

try { main(); }
catch (error) {
  process.stderr.write(`${error.stack || error.message}\n`);
  process.exit(1);
}