import type { BaseModelCatalogItem } from '@easyai-ai-gateway/contracts';
import { describe, expect, it } from 'vitest';
import { createEmptyPlatformForm, platformModelPayloads, platformPayload, validatePlatformForm } from './platform-form';

const baseModel = {
  id: 'model-1',
  providerKey: 'simulation',
  canonicalModelKey: 'simulation:model-1',
  invocationName: 'model-1',
  providerModelName: 'model-1',
  modelType: ['video_generate'],
  modelAlias: 'model-1',
  displayName: 'Model 1',
  referenceCount: 0,
  pricingVersion: 1,
  status: 'active',
  createdAt: '2026-07-24T00:00:00Z',
  updatedAt: '2026-07-24T00:00:00Z',
} satisfies BaseModelCatalogItem;

function selectedForm() {
  return {
    ...createEmptyPlatformForm('simulation'),
    selectedModelIds: [baseModel.id],
  };
}

describe('platform model rate limit payload', () => {
  it('preserves an existing model policy when the edit form was not touched', () => {
    const [payload] = platformModelPayloads([baseModel], selectedForm());

    expect(payload.rateLimitPolicyMode).toBeUndefined();
    expect(payload.rateLimitPolicy).toBeUndefined();
  });

  it('writes inherit only after the override is explicitly disabled', () => {
    const [payload] = platformModelPayloads([baseModel], {
      ...selectedForm(),
      modelRateLimitOverrideTouched: true,
    });

    expect(payload.rateLimitPolicyMode).toBe('inherit');
    expect(payload.rateLimitPolicy).toBeUndefined();
  });

  it('writes an explicit unlimited override when the enabled policy has no rules', () => {
    const [payload] = platformModelPayloads([baseModel], {
      ...selectedForm(),
      modelOverrideRateLimit: true,
      modelRateLimitOverrideTouched: true,
    });

    expect(payload.rateLimitPolicyMode).toBe('override');
    expect(payload.rateLimitPolicy).toEqual({ rules: [] });
  });

  it('serializes queue length and defaults maximum wait to 600 seconds', () => {
    const form = {
      ...selectedForm(),
      name: 'Queue platform',
      baseUrl: 'https://example.test',
      testMode: true,
      queueSize: '12',
      queueMaxWaitSeconds: '',
      modelOverrideRateLimit: true,
      modelRateLimitOverrideTouched: true,
      modelQueueSize: '4',
      modelQueueMaxWaitSeconds: '90',
    };

    expect(platformPayload(form).rateLimitPolicy).toEqual({
      rules: [{ metric: 'queue_size', limit: 12, maxWaitSeconds: 600 }],
    });
    expect(platformModelPayloads([baseModel], form)[0].rateLimitPolicy).toEqual({
      rules: [{ metric: 'queue_size', limit: 4, maxWaitSeconds: 90 }],
    });
  });

  it('rejects queue values outside the shared policy bounds', () => {
    const form = {
      ...selectedForm(),
      name: 'Queue platform',
      baseUrl: 'https://example.test',
      testMode: true,
      queueSize: '10001',
    };
    expect(validatePlatformForm(form, 1)).toContain('1–10000');
    expect(validatePlatformForm({ ...form, queueSize: '2', queueMaxWaitSeconds: '3601' }, 1)).toContain('1–3600');
  });

  it('preserves unknown policy fields and non-editable rules', () => {
    const form = {
      ...selectedForm(),
      name: 'Compatible platform',
      baseUrl: 'https://example.test',
      testMode: true,
      concurrencyLimit: '3',
      queueSize: '6',
      rateLimitPolicyExtra: { extensionMode: 'legacy' },
      rateLimitRuleExtras: {
        concurrent: { consume: 'lease', vendorHint: 'keep' },
        queue_size: { vendorQueueMode: 'shared' },
      },
      rateLimitPreservedRules: [
        { metric: 'tpm_input', limit: 1234, vendorWindow: true },
      ],
    };

    expect(platformPayload(form).rateLimitPolicy).toEqual({
      extensionMode: 'legacy',
      rules: [
        { metric: 'tpm_input', limit: 1234, vendorWindow: true },
        {
          consume: 'lease',
          vendorHint: 'keep',
          metric: 'concurrent',
          limit: 3,
          windowSeconds: 60,
          leaseTtlSeconds: 120,
        },
        {
          vendorQueueMode: 'shared',
          metric: 'queue_size',
          limit: 6,
          maxWaitSeconds: 600,
        },
      ],
    });
  });
});