/**
 * @vitest-environment node
 */
import { beforeEach, describe, expect, it, vi } from 'vitest'

const { mockIsHosted, mockIsAzureConfigured, mockIsOllamaConfigured } = vi.hoisted(() => ({
  mockIsHosted: { value: false },
  mockIsAzureConfigured: { value: false },
  mockIsOllamaConfigured: { value: false },
}))

const {
  mockGetHostedModels,
  mockGetProviderModels,
  mockGetProviderIcon,
  mockGetBaseModelProviders,
} = vi.hoisted(() => ({
  mockGetHostedModels: vi.fn(() => []),
  mockGetProviderModels: vi.fn(() => []),
  mockGetProviderIcon: vi.fn(() => null),
  mockGetBaseModelProviders: vi.fn(() => ({})),
}))

const { mockProviders } = vi.hoisted(() => ({
  mockProviders: {
    value: {
      base: { models: [] as string[], isLoading: false },
      ollama: { models: [] as string[], isLoading: false },
      vllm: { models: [] as string[], isLoading: false },
      litellm: { models: [] as string[], isLoading: false },
      openrouter: { models: [] as string[], isLoading: false },
      fireworks: { models: [] as string[], isLoading: false },
    },
  },
}))

vi.mock('@/lib/core/config/env-flags', () => ({
  get isHosted() {
    return mockIsHosted.value
  },
  get isAzureConfigured() {
    return mockIsAzureConfigured.value
  },
  get isOllamaConfigured() {
    return mockIsOllamaConfigured.value
  },
}))

vi.mock('@/providers/models', () => ({
  getProviderFileAttachment: vi
    .fn()
    .mockReturnValue({ maxBytes: 10 * 1024 * 1024, strategy: 'inline' }),
  INLINE_ATTACHMENT_MAX_BYTES: 10 * 1024 * 1024,
  getHostedModels: mockGetHostedModels,
  getProviderModels: mockGetProviderModels,
  getProviderIcon: mockGetProviderIcon,
  getBaseModelProviders: mockGetBaseModelProviders,
}))

vi.mock('@/providers/utils', () => ({
  getProviderFromModel: vi.fn(() => 'openai'),
}))

vi.mock('@/stores/providers/store', () => ({
  useProvidersStore: {
    getState: () => ({
      get providers() {
        return mockProviders.value
      },
    }),
  },
}))

vi.mock('@/lib/oauth/utils', () => ({
  getScopesForService: vi.fn(() => []),
}))

import type { SubBlockConfig } from '@/blocks/types'
import {
  getApiKeyCondition,
  getDependsOnFields,
  getSubBlocksDependingOnChange,
  parseOptionalBooleanInput,
  parseOptionalJsonInput,
  parseOptionalNumberInput,
} from '@/blocks/utils'

const BASE_CLOUD_MODELS: Record<string, string> = {
  'gpt-4o': 'openai',
  'claude-sonnet-4-5': 'anthropic',
  'gemini-2.5-pro': 'google',
  'mistral-large-latest': 'mistral',
}

describe('getApiKeyCondition / shouldRequireApiKeyForModel', () => {
  const evaluateCondition = (model: string): boolean => {
    const conditionFn = getApiKeyCondition()
    const condition = conditionFn({ model })
    if ('not' in condition && condition.not) return false
    if (condition.value === '__no_model_selected__') return false
    return true
  }

  beforeEach(() => {
    vi.clearAllMocks()
    mockIsHosted.value = false
    mockIsAzureConfigured.value = false
    mockIsOllamaConfigured.value = false
    mockProviders.value = {
      base: { models: [], isLoading: false },
      ollama: { models: [], isLoading: false },
      vllm: { models: [], isLoading: false },
      litellm: { models: [], isLoading: false },
      openrouter: { models: [], isLoading: false },
      fireworks: { models: [], isLoading: false },
    }
    mockGetHostedModels.mockReturnValue([])
    mockGetProviderModels.mockReturnValue([])
    mockGetBaseModelProviders.mockReturnValue({})
  })

  describe('empty or missing model', () => {
    it('does not require API key when model is empty', () => {
      expect(evaluateCondition('')).toBe(false)
    })

    it('does not require API key when model is whitespace', () => {
      expect(evaluateCondition('   ')).toBe(false)
    })
  })

  describe('hosted models', () => {
    it('does not require API key for hosted models on hosted platform', () => {
      mockIsHosted.value = true
      mockGetHostedModels.mockReturnValue(['gpt-4o', 'claude-sonnet-4-5'])
      expect(evaluateCondition('gpt-4o')).toBe(false)
      expect(evaluateCondition('claude-sonnet-4-5')).toBe(false)
    })

    it('requires API key for non-hosted models on hosted platform', () => {
      mockIsHosted.value = true
      mockGetHostedModels.mockReturnValue(['gpt-4o'])
      expect(evaluateCondition('claude-sonnet-4-5')).toBe(true)
    })
  })

  describe('Vertex AI models', () => {
    it('does not require API key for vertex/ prefixed models', () => {
      expect(evaluateCondition('vertex/gemini-2.5-pro')).toBe(false)
    })
  })

  describe('Bedrock models', () => {
    it('does not require API key for bedrock/ prefixed models', () => {
      expect(evaluateCondition('bedrock/anthropic.claude-v2')).toBe(false)
    })
  })

  describe('Azure models', () => {
    it('does not require API key for azure/ models when Azure is configured', () => {
      mockIsAzureConfigured.value = true
      expect(evaluateCondition('azure/gpt-4o')).toBe(false)
      expect(evaluateCondition('azure-openai/gpt-4o')).toBe(false)
      expect(evaluateCondition('azure-anthropic/claude-sonnet-4-5')).toBe(false)
    })

    it('requires API key for azure/ models when Azure is not configured', () => {
      mockIsAzureConfigured.value = false
      expect(evaluateCondition('azure/gpt-4o')).toBe(true)
    })
  })

  describe('vLLM models', () => {
    it('does not require API key for vllm/ prefixed models', () => {
      expect(evaluateCondition('vllm/my-model')).toBe(false)
      expect(evaluateCondition('vllm/llama-3-70b')).toBe(false)
    })
  })

  describe('provider store lookup (client-side)', () => {
    it('does not require API key when model is in the Ollama store bucket', () => {
      mockProviders.value.ollama.models = ['llama3:latest', 'mistral:latest']
      expect(evaluateCondition('llama3:latest')).toBe(false)
      expect(evaluateCondition('mistral:latest')).toBe(false)
    })

    it('requires API key when model is in the base store bucket', () => {
      mockProviders.value.base.models = ['gpt-4o', 'claude-sonnet-4-5']
      expect(evaluateCondition('gpt-4o')).toBe(true)
      expect(evaluateCondition('claude-sonnet-4-5')).toBe(true)
    })

    it('does not require API key when model is in the vLLM store bucket', () => {
      mockProviders.value.vllm.models = ['my-custom-model']
      expect(evaluateCondition('my-custom-model')).toBe(false)
    })

    it('does not require API key when model is in the LiteLLM store bucket', () => {
      mockProviders.value.litellm.models = ['litellm/anthropic/claude-sonnet-4-6']
      expect(evaluateCondition('litellm/anthropic/claude-sonnet-4-6')).toBe(false)
    })

    it('requires API key when model is in the fireworks store bucket', () => {
      mockProviders.value.fireworks.models = ['fireworks/llama-3']
      expect(evaluateCondition('fireworks/llama-3')).toBe(true)
    })

    it('requires API key when model is in the openrouter store bucket', () => {
      mockProviders.value.openrouter.models = ['openrouter/anthropic/claude']
      expect(evaluateCondition('openrouter/anthropic/claude')).toBe(true)
    })

    it('is case-insensitive for store lookup', () => {
      mockProviders.value.ollama.models = ['Llama3:Latest']
      expect(evaluateCondition('llama3:latest')).toBe(false)
    })
  })

  describe('Ollama — OLLAMA_URL env var (server-safe)', () => {
    it('does not require API key for unknown models when OLLAMA_URL is set', () => {
      mockIsOllamaConfigured.value = true
      expect(evaluateCondition('llama3:latest')).toBe(false)
      expect(evaluateCondition('phi3:latest')).toBe(false)
      expect(evaluateCondition('gemma2:latest')).toBe(false)
      expect(evaluateCondition('deepseek-coder:latest')).toBe(false)
    })

    it('does not require API key for Ollama models that match cloud provider regex patterns', () => {
      mockIsOllamaConfigured.value = true
      expect(evaluateCondition('mistral:latest')).toBe(false)
      expect(evaluateCondition('mistral')).toBe(false)
      expect(evaluateCondition('mistral-nemo')).toBe(false)
      expect(evaluateCondition('gpt2')).toBe(false)
    })

    it('requires API key for known cloud models even when OLLAMA_URL is set', () => {
      mockIsOllamaConfigured.value = true
      mockGetBaseModelProviders.mockReturnValue(BASE_CLOUD_MODELS)
      expect(evaluateCondition('gpt-4o')).toBe(true)
      expect(evaluateCondition('claude-sonnet-4-5')).toBe(true)
      expect(evaluateCondition('gemini-2.5-pro')).toBe(true)
      expect(evaluateCondition('mistral-large-latest')).toBe(true)
    })

    it('requires API key for slash-prefixed cloud models when OLLAMA_URL is set', () => {
      mockIsOllamaConfigured.value = true
      expect(evaluateCondition('azure/gpt-4o')).toBe(true)
      expect(evaluateCondition('fireworks/llama-3')).toBe(true)
      expect(evaluateCondition('openrouter/anthropic/claude')).toBe(true)
      expect(evaluateCondition('groq/llama-3')).toBe(true)
    })
  })

  describe('cloud provider models that need API key', () => {
    it('requires API key for standard cloud models on hosted platform', () => {
      mockIsHosted.value = true
      mockGetHostedModels.mockReturnValue([])
      expect(evaluateCondition('gpt-4o')).toBe(true)
      expect(evaluateCondition('claude-sonnet-4-5')).toBe(true)
      expect(evaluateCondition('gemini-2.5-pro')).toBe(true)
      expect(evaluateCondition('mistral-large-latest')).toBe(true)
    })

    it('requires API key for prefixed cloud models on hosted platform', () => {
      mockIsHosted.value = true
      expect(evaluateCondition('fireworks/llama-3')).toBe(true)
      expect(evaluateCondition('openrouter/anthropic/claude')).toBe(true)
      expect(evaluateCondition('groq/llama-3')).toBe(true)
      expect(evaluateCondition('cerebras/gpt-oss-120b')).toBe(true)
    })

    it('requires API key for prefixed cloud models on self-hosted', () => {
      mockIsHosted.value = false
      expect(evaluateCondition('fireworks/llama-3')).toBe(true)
      expect(evaluateCondition('openrouter/anthropic/claude')).toBe(true)
      expect(evaluateCondition('groq/llama-3')).toBe(true)
      expect(evaluateCondition('cerebras/gpt-oss-120b')).toBe(true)
    })
  })

  describe('self-hosted without OLLAMA_URL', () => {
    it('requires API key for any model (Ollama models cannot appear without OLLAMA_URL)', () => {
      mockIsHosted.value = false
      mockIsOllamaConfigured.value = false
      expect(evaluateCondition('llama3:latest')).toBe(true)
      expect(evaluateCondition('mistral:latest')).toBe(true)
      expect(evaluateCondition('gpt-4o')).toBe(true)
    })
  })
})

describe('parseOptionalJsonInput', () => {
  it('returns undefined for empty values', () => {
    expect(parseOptionalJsonInput('', 'payload')).toBeUndefined()
    expect(parseOptionalJsonInput('   ', 'payload')).toBeUndefined()
    expect(parseOptionalJsonInput(undefined, 'payload')).toBeUndefined()
  })

  it('parses JSON strings', () => {
    expect(parseOptionalJsonInput('{"a":1}', 'payload')).toEqual({ a: 1 })
    expect(parseOptionalJsonInput('["a","b"]', 'payload')).toEqual(['a', 'b'])
  })

  it('returns non-string values as-is', () => {
    const value = { a: 1 }
    expect(parseOptionalJsonInput(value, 'payload')).toBe(value)
  })

  it('throws a helpful error for invalid JSON', () => {
    expect(() => parseOptionalJsonInput('{', 'payload')).toThrow(/Invalid JSON for payload/)
  })
})

describe('parseOptionalNumberInput', () => {
  it('returns undefined for empty values', () => {
    expect(parseOptionalNumberInput('', 'limit')).toBeUndefined()
    expect(parseOptionalNumberInput('   ', 'limit')).toBeUndefined()
    expect(parseOptionalNumberInput(undefined, 'limit')).toBeUndefined()
  })

  it('parses number strings and number values', () => {
    expect(parseOptionalNumberInput('42', 'limit')).toBe(42)
    expect(parseOptionalNumberInput(7, 'limit')).toBe(7)
  })

  it('validates integer-only values', () => {
    expect(parseOptionalNumberInput('42', 'limit', { integer: true })).toBe(42)
    expect(() => parseOptionalNumberInput('1.5', 'limit', { integer: true })).toThrow(
      /expected an integer/i
    )
  })

  it('validates min and max bounds', () => {
    expect(parseOptionalNumberInput('10', 'limit', { min: 1, max: 20 })).toBe(10)
    expect(() => parseOptionalNumberInput('0', 'limit', { min: 1 })).toThrow(
      /limit must be at least 1/i
    )
    expect(() => parseOptionalNumberInput('21', 'limit', { max: 20 })).toThrow(
      /limit must be at most 20/i
    )
  })

  it('throws a helpful error for invalid numbers', () => {
    expect(() => parseOptionalNumberInput('abc', 'limit')).toThrow(/Invalid number for limit/i)
  })
})

describe('parseOptionalBooleanInput', () => {
  it('returns undefined for empty values', () => {
    expect(parseOptionalBooleanInput('')).toBeUndefined()
    expect(parseOptionalBooleanInput('   ')).toBeUndefined()
    expect(parseOptionalBooleanInput(undefined)).toBeUndefined()
  })

  it('passes through boolean values', () => {
    expect(parseOptionalBooleanInput(true)).toBe(true)
    expect(parseOptionalBooleanInput(false)).toBe(false)
  })

  it('supports numeric boolean values', () => {
    expect(parseOptionalBooleanInput(1)).toBe(true)
    expect(parseOptionalBooleanInput(0)).toBe(false)
    expect(parseOptionalBooleanInput(5)).toBe(true)
  })

  it('supports trimmed and case-insensitive string values', () => {
    expect(parseOptionalBooleanInput('true')).toBe(true)
    expect(parseOptionalBooleanInput(' TRUE ')).toBe(true)
    expect(parseOptionalBooleanInput('1')).toBe(true)
    expect(parseOptionalBooleanInput('false')).toBe(false)
    expect(parseOptionalBooleanInput(' False ')).toBe(false)
    expect(parseOptionalBooleanInput('0')).toBe(false)
  })

  it('returns undefined for unrecognized string values', () => {
    expect(parseOptionalBooleanInput('yes')).toBeUndefined()
    expect(parseOptionalBooleanInput('no')).toBeUndefined()
  })
})

describe('getDependsOnFields', () => {
  it('returns an empty array when dependsOn is unset', () => {
    expect(getDependsOnFields(undefined)).toEqual([])
  })

  it('returns array dependencies unchanged', () => {
    expect(getDependsOnFields(['credential', 'projectId'])).toEqual(['credential', 'projectId'])
  })

  it('flattens all and any dependencies', () => {
    expect(getDependsOnFields({ all: ['credential'], any: ['teamId', 'manualTeamId'] })).toEqual([
      'credential',
      'teamId',
      'manualTeamId',
    ])
  })
})

describe('getSubBlocksDependingOnChange', () => {
  it('finds direct dependents of a changed subblock', () => {
    const subBlocks: SubBlockConfig[] = [
      { id: 'provider', title: 'Provider', type: 'dropdown' },
      { id: 'model', title: 'Model', type: 'dropdown', dependsOn: ['provider'] },
      { id: 'prompt', title: 'Prompt', type: 'long-input' },
    ]

    expect(
      getSubBlocksDependingOnChange(subBlocks, 'provider').map((subBlock) => subBlock.id)
    ).toEqual(['model'])
  })

  it('matches dependents through canonical basic and advanced siblings', () => {
    const subBlocks: SubBlockConfig[] = [
      {
        id: 'channel',
        title: 'Channel',
        type: 'channel-selector',
        canonicalParamId: 'channelId',
        mode: 'basic',
      },
      {
        id: 'manualChannel',
        title: 'Channel ID',
        type: 'short-input',
        canonicalParamId: 'channelId',
        mode: 'advanced',
      },
      {
        id: 'messageId',
        title: 'Message ID',
        type: 'short-input',
        dependsOn: ['channelId'],
      },
      {
        id: 'threadTs',
        title: 'Thread Timestamp',
        type: 'short-input',
        dependsOn: ['otherField'],
      },
    ]

    expect(
      getSubBlocksDependingOnChange(subBlocks, 'manualChannel').map((subBlock) => subBlock.id)
    ).toEqual(['messageId'])
    expect(
      getSubBlocksDependingOnChange(subBlocks, 'channel').map((subBlock) => subBlock.id)
    ).toEqual(['messageId'])
  })

  it('matches object-form dependencies when any listed dependency changes', () => {
    const subBlocks: SubBlockConfig[] = [
      { id: 'credential', title: 'Credential', type: 'oauth-input' },
      { id: 'teamId', title: 'Team', type: 'short-input' },
      {
        id: 'projectId',
        title: 'Project',
        type: 'short-input',
        dependsOn: { all: ['credential'], any: ['teamId'] },
      },
    ]

    expect(
      getSubBlocksDependingOnChange(subBlocks, 'credential').map((subBlock) => subBlock.id)
    ).toEqual(['projectId'])
    expect(
      getSubBlocksDependingOnChange(subBlocks, 'teamId').map((subBlock) => subBlock.id)
    ).toEqual(['projectId'])
  })
})