import { assertType, describe, expect, test } from 'vitest'

import { getTransactionType } from './getTransactionType.js'

describe('type', () => {
	test('eip1559', () => {
		const type = getTransactionType({ chainId: 1, type: 'eip1559' })
		assertType<'eip1559'>(type)
		expect(type).toEqual('eip1559')
	})

	test('eip2930', () => {
		const type = getTransactionType({ chainId: 1, type: 'eip2930' })
		assertType<'eip2930'>(type)
		expect(type).toEqual('eip2930')
	})

	test('legacy', () => {
		const type = getTransactionType({ type: 'legacy' })
		assertType<'legacy'>(type)
		expect(type).toEqual('legacy')
	})

	test('other', () => {
		const type = getTransactionType({ type: '0x7e' } as const)
		assertType<'0x7e'>(type)
		expect(type).toEqual('0x7e')
	})
})

describe('attributes', () => {
	test('eip1559', () => {
		const type = getTransactionType({
			chainId: 1,
			maxFeePerGas: 1n,
		})
		assertType<'eip1559'>(type)
		expect(type).toEqual('eip1559')
	})

	test('eip1559 with gasPrice undefined', () => {
		const type = getTransactionType({
			chainId: 1,
			maxFeePerGas: 1n,
			gasPrice: undefined,
		})
		assertType<'eip1559'>(type)
		expect(type).toEqual('eip1559')
	})

	test('eip2930', () => {
		const type = getTransactionType({
			chainId: 1,
			gasPrice: 1n,
			accessList: [],
		})
		assertType<'eip2930'>(type)
		expect(type).toEqual('eip2930')
	})

	test('eip2930 with eip1559 properties undefined', () => {
		const type = getTransactionType({
			chainId: 1,
			gasPrice: 1n,
			maxFeePerGas: undefined,
			maxPriorityFeePerGas: undefined,
			accessList: [],
		})
		assertType<'eip2930'>(type)
		expect(type).toEqual('eip2930')
	})

	test('legacy', () => {
		const type = getTransactionType({ gasPrice: 1n })
		assertType<'legacy'>(type)
		expect(type).toEqual('legacy')
	})

	test('legacy with eip1559 properties undefined', () => {
		const type = getTransactionType({
			gasPrice: 1n,
			maxFeePerGas: undefined,
			maxPriorityFeePerGas: undefined,
		})
		assertType<'legacy'>(type)
		expect(type).toEqual('legacy')
	})
})

test('invalid', () => {
	expect(() =>
		getTransactionType({ chainId: 1 }),
	).toThrowErrorMatchingInlineSnapshot(`
    "Cannot infer a transaction type from provided transaction.

    Provided Transaction:
    {
      chainId:  1
    }

    To infer the type, either provide:
    - a \`type\` to the Transaction, or
    - an EIP-1559 Transaction with \`maxFeePerGas\`, or
    - an EIP-2930 Transaction with \`gasPrice\` & \`accessList\`, or
    - a Legacy Transaction with \`gasPrice\`

    Version: viem@1.0.2"
  `)
})