import { describe, expect, it } from 'vitest'
import {
  createMunicipalityProfile,
  fetchAvailableJurisdictions,
  fetchMunicipalityProfiles,
  MunicipalityValidationError,
  updateMunicipalityProfile,
  type MunicipalityProfile,
} from './municipalityContracts'

const makeProfile = (overrides: Partial<MunicipalityProfile> = {}): MunicipalityProfile => ({
  profileId: 'abc123',
  jCode: 'FAIR01',
  displayName: 'Fairview Borough',
  updatedAt: '2026-05-06T12:00:00Z',
  updatedBy: 'user@test.com',
  legacyName: 'Fairview Borough',
  legacyMailingAddress: '100 Main St',
  legacyCityStateZip: 'Fairview, PA 16415',
  ...overrides,
})

// ── fetchMunicipalityProfiles ─────────────────────────────────────────────────

describe('fetchMunicipalityProfiles', () => {
  it('returns profiles on 200', async () => {
    const stub = async () =>
      new Response(JSON.stringify([makeProfile()]), { status: 200 })

    const result = await fetchMunicipalityProfiles(stub)

    expect(result).toHaveLength(1)
    expect(result[0].jCode).toBe('FAIR01')
    expect(result[0].legacyName).toBe('Fairview Borough')
  })

  it('throws on non-200', async () => {
    const stub = async () => new Response('{}', { status: 500 })

    await expect(fetchMunicipalityProfiles(stub)).rejects.toThrow('500')
  })
})

// ── createMunicipalityProfile ─────────────────────────────────────────────────

describe('createMunicipalityProfile', () => {
  it('returns profile on 200', async () => {
    const stub = async () =>
      new Response(JSON.stringify(makeProfile()), { status: 200 })

    const result = await createMunicipalityProfile('FAIR01', 'Fairview', stub)

    expect(result.profileId).toBe('abc123')
    expect(result.jCode).toBe('FAIR01')
  })

  it('throws MunicipalityValidationError on 422 with descriptive message', async () => {
    const stub = async () =>
      new Response(JSON.stringify({ error: "No legacy jurisdiction found for JCode 'NOPE'." }), {
        status: 422,
      })

    await expect(createMunicipalityProfile('NOPE', null, stub)).rejects.toSatisfy(
      (e) => e instanceof MunicipalityValidationError && e.message.includes('NOPE'),
    )
  })

  it('throws generic Error on other non-200 status', async () => {
    const stub = async () => new Response('{}', { status: 500 })

    await expect(createMunicipalityProfile('FAIR01', null, stub)).rejects.toThrow('500')
    await expect(createMunicipalityProfile('FAIR01', null, stub)).rejects.not.toSatisfy(
      (e) => e instanceof MunicipalityValidationError,
    )
  })
})

// ── updateMunicipalityProfile ─────────────────────────────────────────────────

describe('updateMunicipalityProfile', () => {
  it('returns updated profile on 200', async () => {
    const stub = async () =>
      new Response(JSON.stringify(makeProfile({ displayName: 'New Name' })), { status: 200 })

    const result = await updateMunicipalityProfile('abc123', 'New Name', stub)

    expect(result.displayName).toBe('New Name')
  })

  it('throws MunicipalityValidationError on 422', async () => {
    const stub = async () =>
      new Response(JSON.stringify({ error: 'Profile not found.' }), { status: 422 })

    await expect(updateMunicipalityProfile('ghost', 'X', stub)).rejects.toSatisfy(
      (e) => e instanceof MunicipalityValidationError,
    )
  })
})

// ── fetchAvailableJurisdictions ───────────────────────────────────────────────

describe('fetchAvailableJurisdictions', () => {
  it('returns jurisdictions on 200', async () => {
    const stub = async () =>
      new Response(
        JSON.stringify([
          { jCode: 'FAIR01', name: 'Fairview Borough' },
          { jCode: 'LAKE02', name: null },
        ]),
        { status: 200 },
      )

    const result = await fetchAvailableJurisdictions(stub)

    expect(result).toHaveLength(2)
    expect(result[0].jCode).toBe('FAIR01')
    expect(result[0].name).toBe('Fairview Borough')
    expect(result[1].name).toBeNull()
  })

  it('throws on non-200', async () => {
    const stub = async () => new Response('{}', { status: 503 })

    await expect(fetchAvailableJurisdictions(stub)).rejects.toThrow('503')
  })
})

// ── MunicipalityValidationError ───────────────────────────────────────────────

describe('MunicipalityValidationError', () => {
  it('has correct name and message', () => {
    const err = new MunicipalityValidationError('JCode not found')

    expect(err.name).toBe('MunicipalityValidationError')
    expect(err.message).toBe('JCode not found')
    expect(err).toBeInstanceOf(Error)
  })
})