// SPDX-FileCopyrightText: © 2026 LEDGER SAS
// SPDX-License-Identifier: Apache-2.0

import type { TezosCoinConfig, TezosContext } from '../config'
import { getStakes } from './getStakes'

const mockGetAccountByAddress = jest.fn()
const mockGetUnstakeRequests = jest.fn()
jest.mock('../network/tzkt', () => ({
  __esModule: true,
  createTzktApi: () => ({
    getAccountByAddress: (...args: unknown[]) => mockGetAccountByAddress(...args),
    getUnstakeRequests: (...args: unknown[]) => mockGetUnstakeRequests(...args),
  }),
}))

describe('getStakes', () => {
  const context: TezosContext = {
    config: async () =>
      ({
        status: { type: 'active' },
        baker: { url: 'http://baker.example.com' },
        explorer: { url: 'http://tezos.explorer.com', maxTxQuery: 100 },
        node: { url: 'http://tezos.node.com' },
        fees: {
          minGasLimit: 600,
          minRevealGasLimit: 300,
          minStorageLimit: 0,
          minFees: 500,
          minEstimatedFees: 500,
        },
      }) as unknown as TezosCoinConfig,
    logger: () => undefined,
  }

  const makeRequest = (
    overrides: Partial<{
      id: number
      cycle: number
      bakerAddress: string
      stakerAddress: string
      firstTime: string
      status: 'pending' | 'finalizable' | 'finalized'
      actualAmount: number
    }>
  ) => ({
    id: overrides.id ?? 1,
    cycle: overrides.cycle ?? 100,
    baker: { address: overrides.bakerAddress ?? 'tz1KqTpEZ7Yob7QbPE4Hy4Wo8fHG8LhKxZSx' },
    staker: { address: overrides.stakerAddress ?? 'tz1TzrmTBSuiVHV2VfMnGRMYvTEPCP42oSM8' },
    firstTime: overrides.firstTime ?? '2026-05-01T00:00:00Z',
    status: overrides.status ?? ('pending' as const),
    actualAmount: overrides.actualAmount ?? 10,
  })

  beforeEach(() => {
    jest.clearAllMocks()
    mockGetUnstakeRequests.mockResolvedValue([])
  })

  describe('account types', () => {
    it('should return empty stakes for non-delegated account', async () => {
      mockGetAccountByAddress.mockResolvedValue({
        type: 'user',
        address: 'tz1WvvbEGpBXGeTVbLiR6DYBe1izmgiYuZbq',
        publicKey: 'edpk...',
        balance: 1000000,
        revealed: true,
        counter: 0,
        delegationLevel: 0,
        delegationTime: '2021-01-01T00:00:00Z',
        numTransactions: 0,
        firstActivityTime: '2021-01-01T00:00:00Z',
      })

      const result = await getStakes(context, 'tz1WvvbEGpBXGeTVbLiR6DYBe1izmgiYuZbq')

      expect(result.items).toEqual([])
    })

    it('should return empty stakes for non user account', async () => {
      mockGetAccountByAddress.mockResolvedValue({
        type: 'empty',
        address: 'tz1EmptyAccount',
        counter: 0,
      })

      const result = await getStakes(context, 'tz1EmptyAccount')

      expect(result.items).toEqual([])
    })

    it('should return stake position for non-delegated account with stakedBalance > 0', async () => {
      const address = 'tz1NoDelegateStaker'
      mockGetAccountByAddress.mockResolvedValue({
        type: 'user',
        address,
        publicKey: 'edpk...',
        balance: 100,
        stakedBalance: 30,
        revealed: true,
        counter: 0,
        delegationLevel: 0,
        delegationTime: '2021-01-01T00:00:00Z',
        numTransactions: 0,
        firstActivityTime: '2021-01-01T00:00:00Z',
      })

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `stake-${address}`,
          address,
          state: 'active',
          asset: { type: 'native' },
          amount: 30n,
          actions: [],
        },
      ])
    })

    it('should return unstaking position for non-delegated account with unstakedBalance > 0', async () => {
      const address = 'tz1NoDelegateUnstaker'
      const bakerAddress = 'tz1BakerOfUnstake'
      mockGetAccountByAddress.mockResolvedValue({
        type: 'user',
        address,
        publicKey: 'edpk...',
        balance: 100,
        unstakedBalance: 10,
        revealed: true,
        counter: 0,
        delegationLevel: 0,
        delegationTime: '2021-01-01T00:00:00Z',
        numTransactions: 0,
        firstActivityTime: '2021-01-01T00:00:00Z',
      })
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({ id: 42, bakerAddress, actualAmount: 10, firstTime: '2026-05-01T00:00:00Z' }),
      ])

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `unstaking-42`,
          address,
          delegate: bakerAddress,
          state: 'deactivating',
          createdAt: new Date('2026-05-01T00:00:00Z'),
          asset: { type: 'native' },
          amount: 10n,
          actions: [],
        },
      ])
    })
  })

  describe('delegated accounts', () => {
    const address = 'tz1TzrmTBSuiVHV2VfMnGRMYvTEPCP42oSM8'
    const delegateAddress = 'tz1KqTpEZ7Yob7QbPE4Hy4Wo8fHG8LhKxZSx'

    function makeAccount(overrides: Record<string, unknown> = {}) {
      return {
        type: 'user' as const,
        address,
        publicKey: 'edpk...',
        balance: 5000000,
        revealed: true,
        counter: 0,
        delegate: { alias: 'Test Delegate', address: delegateAddress, active: true },
        delegationLevel: 100,
        delegationTime: '2021-01-01T00:00:00Z',
        numTransactions: 10,
        firstActivityTime: '2021-01-01T00:00:00Z',
        ...overrides,
      }
    }

    it('should return delegation stake for delegated account with no staking', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount())

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `delegation-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 5000000n,
          actions: [],
        },
      ])
    })

    it('should handle account with zero balance but delegation', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 0 }))

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `delegation-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 0n,
          actions: [],
        },
      ])
    })

    it('should return delegation + stake when stakedBalance > 0', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 100, stakedBalance: 30 }))

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `delegation-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 70n,
          actions: [],
        },
        {
          uid: `stake-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 30n,
          actions: [],
        },
      ])
    })

    it('should return delegation + unstaking when unstakedBalance > 0', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 100, unstakedBalance: 10 }))
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({
          id: 7,
          bakerAddress: delegateAddress,
          actualAmount: 10,
          firstTime: '2026-05-01T00:00:00Z',
        }),
      ])

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `delegation-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 90n,
          actions: [],
        },
        {
          uid: `unstaking-7`,
          address,
          delegate: delegateAddress,
          state: 'deactivating',
          createdAt: new Date('2026-05-01T00:00:00Z'),
          asset: { type: 'native' },
          amount: 10n,
          actions: [],
        },
      ])
    })

    it('should return all three positions when delegate, stakedBalance and unstakedBalance are set', async () => {
      mockGetAccountByAddress.mockResolvedValue(
        makeAccount({ balance: 100, stakedBalance: 30, unstakedBalance: 10 })
      )
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({
          id: 11,
          bakerAddress: delegateAddress,
          actualAmount: 10,
          firstTime: '2026-05-02T00:00:00Z',
        }),
      ])

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `delegation-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 60n,
          actions: [],
        },
        {
          uid: `stake-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 30n,
          actions: [],
        },
        {
          uid: `unstaking-11`,
          address,
          delegate: delegateAddress,
          state: 'deactivating',
          createdAt: new Date('2026-05-02T00:00:00Z'),
          asset: { type: 'native' },
          amount: 10n,
          actions: [],
        },
      ])

      const total = result.items.reduce((sum, i) => sum + i.amount, 0n)
      expect(total).toBe(100n)
    })
  })

  describe('finalizable unstakes', () => {
    const address = 'tz1FinalizableStaker'
    const delegateAddress = 'tz1KqTpEZ7Yob7QbPE4Hy4Wo8fHG8LhKxZSx'

    function makeAccount(overrides: Record<string, unknown> = {}) {
      return {
        type: 'user' as const,
        address,
        publicKey: 'edpk...',
        balance: 1000,
        revealed: true,
        counter: 0,
        delegationLevel: 0,
        delegationTime: '2026-01-01T00:00:00Z',
        numTransactions: 0,
        firstActivityTime: '2026-01-01T00:00:00Z',
        ...overrides,
      }
    }

    it('emits one position per unstake request mixing pending and finalizable', async () => {
      mockGetAccountByAddress.mockResolvedValue(
        makeAccount({
          balance: 1000,
          unstakedBalance: 100,
          delegate: { alias: 'B', address: delegateAddress, active: true },
        })
      )
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({
          id: 1,
          bakerAddress: delegateAddress,
          actualAmount: 60,
          firstTime: '2026-05-01T00:00:00Z',
          status: 'pending',
        }),
        makeRequest({
          id: 2,
          bakerAddress: delegateAddress,
          actualAmount: 40,
          firstTime: '2026-04-25T00:00:00Z',
          status: 'finalizable',
        }),
      ])

      const result = await getStakes(context, address)

      expect(result.items).toEqual([
        {
          uid: `delegation-${address}`,
          address,
          delegate: delegateAddress,
          state: 'active',
          asset: { type: 'native' },
          amount: 900n,
          actions: [],
        },
        {
          uid: `unstaking-1`,
          address,
          delegate: delegateAddress,
          state: 'deactivating',
          createdAt: new Date('2026-05-01T00:00:00Z'),
          asset: { type: 'native' },
          amount: 60n,
          actions: [],
        },
        {
          uid: `finalizable-2`,
          address,
          delegate: delegateAddress,
          state: 'inactive',
          createdAt: new Date('2026-04-25T00:00:00Z'),
          asset: { type: 'native' },
          amount: 40n,
          actions: [],
        },
      ])
    })

    it("preserves the unstake-request baker, not the account's current delegate", async () => {
      const previousBaker = 'tz1PreviousBaker'
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 1000, unstakedBalance: 50 }))
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({
          id: 99,
          bakerAddress: previousBaker,
          actualAmount: 50,
          firstTime: '2026-05-03T00:00:00Z',
        }),
      ])

      const result = await getStakes(context, address)

      const unstaking = result.items.find((i) => i.uid === 'unstaking-99')
      expect(unstaking?.delegate).toBe(previousBaker)
    })

    it('skips requests with non-positive actualAmount', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 1000, unstakedBalance: 10 }))
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({ id: 3, actualAmount: 0 }),
        makeRequest({ id: 4, actualAmount: 10, firstTime: '2026-05-04T00:00:00Z' }),
      ])

      const result = await getStakes(context, address)

      expect(result.items.filter((i) => i.uid.startsWith('unstaking-'))).toHaveLength(1)
      expect(result.items.find((i) => i.uid === 'unstaking-4')?.amount).toBe(10n)
    })

    it('skips the unstake-requests endpoint entirely when unstakedBalance is 0', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 1000, unstakedBalance: 0 }))

      const result = await getStakes(context, address)

      expect(result.items).toEqual([])
      expect(mockGetUnstakeRequests).not.toHaveBeenCalled()
    })

    it('skips unstake requests with an invalid firstTime', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 1000, unstakedBalance: 30 }))
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({ id: 1, actualAmount: 10, firstTime: 'not-a-date' }),
        makeRequest({ id: 2, actualAmount: 20, firstTime: '2026-05-04T00:00:00Z' }),
      ])

      const result = await getStakes(context, address)

      expect(result.items.map((i) => i.uid)).toEqual(['unstaking-2'])
    })

    it('drops finalized requests (funds already returned to spendable)', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 1000, unstakedBalance: 30 }))
      mockGetUnstakeRequests.mockResolvedValue([
        makeRequest({ id: 1, actualAmount: 480, status: 'finalized' }),
        makeRequest({ id: 2, actualAmount: 30, firstTime: '2026-05-04T00:00:00Z' }),
      ])

      const result = await getStakes(context, address)

      expect(result.items.map((i) => i.uid)).toEqual(['unstaking-2'])
      expect(result.items.find((i) => i.uid === 'unstaking-2')?.amount).toBe(30n)
    })

    it('propagates rejection when getUnstakeRequests fails', async () => {
      mockGetAccountByAddress.mockResolvedValue(makeAccount({ balance: 100, unstakedBalance: 10 }))
      mockGetUnstakeRequests.mockRejectedValueOnce(new Error('tzkt 500'))

      await expect(getStakes(context, address)).rejects.toThrow('tzkt 500')
    })
  })

  describe('delegation amount clamping', () => {
    const address = 'tz1Reorg'
    const delegateAddress = 'tz1Baker'

    it('clamps delegation amount to 0 when balance < stakedBalance (TzKT reorg edge)', async () => {
      mockGetAccountByAddress.mockResolvedValue({
        type: 'user',
        address,
        publicKey: 'edpk...',
        balance: 50,
        stakedBalance: 80,
        revealed: true,
        counter: 0,
        delegate: { alias: 'B', address: delegateAddress, active: true },
        delegationLevel: 100,
        delegationTime: '2026-01-01T00:00:00Z',
        numTransactions: 0,
        firstActivityTime: '2026-01-01T00:00:00Z',
      })

      const result = await getStakes(context, address)

      const delegation = result.items.find((i) => i.uid === `delegation-${address}`)
      expect(delegation?.amount).toBe(0n)
    })
  })
})