import { afterEach, describe, expect, test } from 'bun:test'

import { saveGlobalConfig, type ProviderProfile } from './config.js'
import { getAPIProvider } from './model/providers.js'
import {
  applyActiveProviderProfileFromConfig,
  applyProviderProfileToProcessEnv,
  deleteProviderProfile,
  getProviderProfiles,
  getProviderPresetDefaults,
  persistActiveProviderProfileModel,
} from './providerProfiles.js'

const originalEnv = { ...process.env }

const RESTORED_KEYS = [
  'CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED',
  'CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED_ID',
  'CLAUDE_CODE_USE_OPENAI',
  'CLAUDE_CODE_USE_GEMINI',
  'CLAUDE_CODE_USE_GITHUB',
  'CLAUDE_CODE_USE_BEDROCK',
  'CLAUDE_CODE_USE_VERTEX',
  'CLAUDE_CODE_USE_FOUNDRY',
  'OPENAI_BASE_URL',
  'OPENAI_API_BASE',
  'OPENAI_MODEL',
  'OPENAI_API_KEY',
  'ANTHROPIC_BASE_URL',
  'ANTHROPIC_MODEL',
  'ANTHROPIC_API_KEY',
] as const

afterEach(() => {
  for (const key of RESTORED_KEYS) {
    if (originalEnv[key] === undefined) {
      delete process.env[key]
    } else {
      process.env[key] = originalEnv[key]
    }
  }

  saveGlobalConfig(current => ({
    ...current,
    providerProfiles: [],
    activeProviderProfileId: undefined,
    openaiAdditionalModelOptionsCache: [],
    openaiAdditionalModelOptionsCacheByProfile: {},
  }))
})

function buildProfile(overrides: Partial<ProviderProfile> = {}): ProviderProfile {
  return {
    id: 'provider_test',
    name: 'Test Provider',
    provider: 'openai',
    baseUrl: 'https://api.openai.com/v1',
    model: 'gpt-4o',
    ...overrides,
  }
}

describe('applyProviderProfileToProcessEnv', () => {
  test('openai profile clears competing gemini/github flags', () => {
    process.env.CLAUDE_CODE_USE_GEMINI = '1'
    process.env.CLAUDE_CODE_USE_GITHUB = '1'

    applyProviderProfileToProcessEnv(buildProfile())

    expect(process.env.CLAUDE_CODE_USE_GEMINI).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_GITHUB).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_OPENAI).toBe('1')
    expect(process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED_ID).toBe(
      'provider_test',
    )
    expect(getAPIProvider()).toBe('openai')
  })

  test('anthropic profile clears competing gemini/github flags', () => {
    process.env.CLAUDE_CODE_USE_GEMINI = '1'
    process.env.CLAUDE_CODE_USE_GITHUB = '1'

    applyProviderProfileToProcessEnv(
      buildProfile({
        provider: 'anthropic',
        baseUrl: 'https://api.anthropic.com',
        model: 'claude-sonnet-4-6',
      }),
    )

    expect(process.env.CLAUDE_CODE_USE_GEMINI).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_GITHUB).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_OPENAI).toBeUndefined()
    expect(getAPIProvider()).toBe('firstParty')
  })
})

describe('applyActiveProviderProfileFromConfig', () => {
  test('does not override explicit startup provider selection', () => {
    process.env.CLAUDE_CODE_USE_OPENAI = '1'
    process.env.OPENAI_BASE_URL = 'http://localhost:11434/v1'
    process.env.OPENAI_MODEL = 'qwen2.5:3b'

    const applied = applyActiveProviderProfileFromConfig({
      providerProfiles: [
        buildProfile({
          id: 'saved_openai',
          baseUrl: 'https://api.openai.com/v1',
          model: 'gpt-4o',
        }),
      ],
      activeProviderProfileId: 'saved_openai',
    } as any)

    expect(applied).toBeUndefined()
    expect(process.env.OPENAI_BASE_URL).toBe('http://localhost:11434/v1')
    expect(process.env.OPENAI_MODEL).toBe('qwen2.5:3b')
  })

  test('does not override explicit startup selection when profile marker is stale', () => {
    process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED = '1'
    process.env.CLAUDE_CODE_USE_OPENAI = '1'
    process.env.OPENAI_BASE_URL = 'http://localhost:11434/v1'
    process.env.OPENAI_MODEL = 'qwen2.5:3b'

    const applied = applyActiveProviderProfileFromConfig({
      providerProfiles: [
        buildProfile({
          id: 'saved_openai',
          baseUrl: 'https://api.openai.com/v1',
          model: 'gpt-4o',
        }),
      ],
      activeProviderProfileId: 'saved_openai',
    } as any)

    expect(applied).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_OPENAI).toBe('1')
    expect(process.env.OPENAI_BASE_URL).toBe('http://localhost:11434/v1')
    expect(process.env.OPENAI_MODEL).toBe('qwen2.5:3b')
  })

  test('re-applies active profile when profile-managed env drifts', () => {
    applyProviderProfileToProcessEnv(
      buildProfile({
        id: 'saved_openai',
        baseUrl: 'http://192.168.33.108:11434/v1',
        model: 'kimi-k2.5:cloud',
      }),
    )

    // Simulate settings/env merge clobbering the model while profile flags remain.
    process.env.OPENAI_MODEL = 'github:copilot'

    const applied = applyActiveProviderProfileFromConfig({
      providerProfiles: [
        buildProfile({
          id: 'saved_openai',
          baseUrl: 'http://192.168.33.108:11434/v1',
          model: 'kimi-k2.5:cloud',
        }),
      ],
      activeProviderProfileId: 'saved_openai',
    } as any)

    expect(applied?.id).toBe('saved_openai')
    expect(process.env.OPENAI_MODEL).toBe('kimi-k2.5:cloud')
    expect(process.env.OPENAI_BASE_URL).toBe('http://192.168.33.108:11434/v1')
  })

  test('does not re-apply active profile when flags conflict with current provider', () => {
    applyProviderProfileToProcessEnv(
      buildProfile({
        id: 'saved_openai',
        baseUrl: 'http://192.168.33.108:11434/v1',
        model: 'kimi-k2.5:cloud',
      }),
    )

    process.env.CLAUDE_CODE_USE_GITHUB = '1'
    process.env.OPENAI_MODEL = 'github:copilot'

    const applied = applyActiveProviderProfileFromConfig({
      providerProfiles: [
        buildProfile({
          id: 'saved_openai',
          baseUrl: 'http://192.168.33.108:11434/v1',
          model: 'kimi-k2.5:cloud',
        }),
      ],
      activeProviderProfileId: 'saved_openai',
    } as any)

    expect(applied).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_GITHUB).toBe('1')
    expect(process.env.OPENAI_MODEL).toBe('github:copilot')
  })

  test('applies active profile when no explicit provider is selected', () => {
    delete process.env.CLAUDE_CODE_USE_OPENAI
    delete process.env.CLAUDE_CODE_USE_GEMINI
    delete process.env.CLAUDE_CODE_USE_GITHUB
    delete process.env.CLAUDE_CODE_USE_BEDROCK
    delete process.env.CLAUDE_CODE_USE_VERTEX
    delete process.env.CLAUDE_CODE_USE_FOUNDRY

    process.env.OPENAI_BASE_URL = 'http://localhost:11434/v1'
    process.env.OPENAI_MODEL = 'qwen2.5:3b'

    const applied = applyActiveProviderProfileFromConfig({
      providerProfiles: [
        buildProfile({
          id: 'saved_openai',
          baseUrl: 'https://api.openai.com/v1',
          model: 'gpt-4o',
        }),
      ],
      activeProviderProfileId: 'saved_openai',
    } as any)

    expect(applied?.id).toBe('saved_openai')
    expect(process.env.CLAUDE_CODE_USE_OPENAI).toBe('1')
    expect(process.env.OPENAI_BASE_URL).toBe('https://api.openai.com/v1')
    expect(process.env.OPENAI_MODEL).toBe('gpt-4o')
  })
})

describe('persistActiveProviderProfileModel', () => {
  test('updates active profile model and current env for profile-managed sessions', () => {
    const activeProfile = buildProfile({
      id: 'saved_openai',
      baseUrl: 'http://192.168.33.108:11434/v1',
      model: 'kimi-k2.5:cloud',
    })

    saveGlobalConfig(current => ({
      ...current,
      providerProfiles: [activeProfile],
      activeProviderProfileId: activeProfile.id,
    }))
    applyProviderProfileToProcessEnv(activeProfile)

    const updated = persistActiveProviderProfileModel('minimax-m2.5:cloud')

    expect(updated?.id).toBe(activeProfile.id)
    expect(updated?.model).toBe('minimax-m2.5:cloud')
    expect(process.env.OPENAI_MODEL).toBe('minimax-m2.5:cloud')
    expect(process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED_ID).toBe(
      activeProfile.id,
    )

    const saved = getProviderProfiles().find(
      profile => profile.id === activeProfile.id,
    )
    expect(saved?.model).toBe('minimax-m2.5:cloud')
  })

  test('does not mutate process env when session is not profile-managed', () => {
    const activeProfile = buildProfile({
      id: 'saved_openai',
      model: 'kimi-k2.5:cloud',
    })

    saveGlobalConfig(current => ({
      ...current,
      providerProfiles: [activeProfile],
      activeProviderProfileId: activeProfile.id,
    }))

    process.env.CLAUDE_CODE_USE_OPENAI = '1'
    process.env.OPENAI_MODEL = 'cli-model'
    delete process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED
    delete process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED_ID

    persistActiveProviderProfileModel('minimax-m2.5:cloud')

    expect(process.env.OPENAI_MODEL).toBe('cli-model')
    const saved = getProviderProfiles().find(
      profile => profile.id === activeProfile.id,
    )
    expect(saved?.model).toBe('minimax-m2.5:cloud')
  })
})

describe('getProviderPresetDefaults', () => {
  test('ollama preset defaults to a local Ollama model', () => {
    delete process.env.OPENAI_MODEL

    const defaults = getProviderPresetDefaults('ollama')

    expect(defaults.baseUrl).toBe('http://localhost:11434/v1')
    expect(defaults.model).toBe('llama3.1:8b')
  })
})

describe('deleteProviderProfile', () => {
  test('deleting final profile clears provider env when active profile applied it', () => {
    applyProviderProfileToProcessEnv(
      buildProfile({
        id: 'only_profile',
        baseUrl: 'https://api.openai.com/v1',
        model: 'gpt-4o',
        apiKey: 'sk-test',
      }),
    )

    saveGlobalConfig(current => ({
      ...current,
      providerProfiles: [buildProfile({ id: 'only_profile' })],
      activeProviderProfileId: 'only_profile',
    }))

    const result = deleteProviderProfile('only_profile')

    expect(result.removed).toBe(true)
    expect(result.activeProfileId).toBeUndefined()

    expect(process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED).toBeUndefined()

    expect(process.env.CLAUDE_CODE_USE_OPENAI).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_GEMINI).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_GITHUB).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_BEDROCK).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_VERTEX).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_FOUNDRY).toBeUndefined()

    expect(process.env.OPENAI_BASE_URL).toBeUndefined()
    expect(process.env.OPENAI_API_BASE).toBeUndefined()
    expect(process.env.OPENAI_MODEL).toBeUndefined()
    expect(process.env.OPENAI_API_KEY).toBeUndefined()

    expect(process.env.ANTHROPIC_BASE_URL).toBeUndefined()
    expect(process.env.ANTHROPIC_MODEL).toBeUndefined()
    expect(process.env.ANTHROPIC_API_KEY).toBeUndefined()
  })

  test('deleting final profile preserves explicit startup provider env', () => {
    process.env.CLAUDE_CODE_USE_OPENAI = '1'
    process.env.OPENAI_BASE_URL = 'http://localhost:11434/v1'
    process.env.OPENAI_MODEL = 'qwen2.5:3b'

    saveGlobalConfig(current => ({
      ...current,
      providerProfiles: [buildProfile({ id: 'only_profile' })],
      activeProviderProfileId: 'only_profile',
    }))

    const result = deleteProviderProfile('only_profile')

    expect(result.removed).toBe(true)
    expect(result.activeProfileId).toBeUndefined()

    expect(process.env.CLAUDE_CODE_PROVIDER_PROFILE_ENV_APPLIED).toBeUndefined()
    expect(process.env.CLAUDE_CODE_USE_OPENAI).toBe('1')
    expect(process.env.OPENAI_BASE_URL).toBe('http://localhost:11434/v1')
    expect(process.env.OPENAI_MODEL).toBe('qwen2.5:3b')
  })
})