const assert = require('node:assert/strict')
const fs = require('node:fs')
const path = require('node:path')
const { pathToFileURL } = require('node:url')
const vm = require('node:vm')
const rules = require('../utils/teamBackgroundFile')

assert.equal(rules.validateEnterpriseWebsite(' 无 '), '')
assert.equal(rules.validateEnterpriseWebsite('https://example.com'), '')
assert.match(rules.validateEnterpriseWebsite('ftp://example.com'), /http/)
assert.equal(rules.validateBackgroundFile({ name: 'brief.PDF', size: 1 }), '')
assert.match(rules.validateBackgroundFile({ name: 'brief.zip', size: 1 }), /类型/)
assert.match(rules.validateBackgroundFile({ name: 'brief.pdf', size: 50 * 1024 * 1024 + 1 }), /50MB/)
assert.equal(rules.validateBackgroundFile({ name: 'brief.pdf', size: 50 * 1024 * 1024 }), '')
assert.equal(rules.validateBackgroundFile({ name: `${'a'.repeat(251)}.pdf`, size: 1 }), '')
assert.match(rules.validateBackgroundFile({ name: `${'a'.repeat(252)}.pdf`, size: 1 }), /255/)
assert.match(rules.validateBackgroundFile({ name: 'empty.pdf', size: 0 }), /非空/)

const backendExpiry = '2026-07-21 15:30:00'
const explicitOffsetExpiry = '2026-07-21T15:30:00+08:00'
const utcExpiry = '2026-07-21T07:30:00.250Z'
assert.equal(rules.parseSessionExpiresAt(backendExpiry), Date.UTC(2026, 6, 21, 7, 30, 0))
assert.equal(rules.parseSessionExpiresAt(explicitOffsetExpiry), Date.UTC(2026, 6, 21, 7, 30, 0))
assert.equal(rules.parseSessionExpiresAt(utcExpiry), Date.UTC(2026, 6, 21, 7, 30, 0, 250))
assert.equal(rules.getSessionRemainingSeconds(backendExpiry, Date.UTC(2026, 6, 21, 7, 29, 59, 1)), 1)
assert.equal(rules.getSessionRemainingSeconds(backendExpiry, Date.UTC(2026, 6, 21, 7, 30, 1)), 0)
assert.equal(rules.getSessionRemainingSeconds('2026-07-21T15:30:00', 0), 0)
assert.equal(rules.getSessionRemainingSeconds('not-a-date', 0), 0)

const validQueueItem = rules.createBackgroundQueueItem(
	{ name: 'brief.pdf', path: '/tmp/brief.pdf', size: 1 },
	'valid-file'
)
const invalidQueueItem = rules.createBackgroundQueueItem(
	{ name: 'archive.zip', path: '/tmp/archive.zip', size: 1 },
	'invalid-file'
)
assert.equal(validQueueItem.status, 'pending')
assert.equal(validQueueItem.progress, 0)
assert.equal(validQueueItem.validationError, '')
assert.equal(invalidQueueItem.status, 'failed')
assert.match(invalidQueueItem.validationError, /类型/)
validQueueItem.status = 'success'
const uploadFailure = {
	id: 'upload-failure',
	status: 'failed',
	validationError: '',
	error: '上传失败'
}
assert.deepEqual(
	rules.getUploadableBackgroundFiles([validQueueItem, invalidQueueItem, uploadFailure]),
	[uploadFailure]
)

const originalTeam = {
	id: 12,
	teamName: '研发团队',
	enterpriseWebsite: ' https://example.com/team ',
	coachId: 3,
	uploaderId: 4,
	source: 'WECHAT'
}
const teamSubmitPayload = rules.createTeamSubmitPayload(originalTeam)
assert.equal(teamSubmitPayload.id, 12)
assert.equal(teamSubmitPayload.enterpriseWebsite, 'https://example.com/team')
assert.equal(Object.hasOwn(teamSubmitPayload, 'coachId'), false)
assert.equal(Object.hasOwn(teamSubmitPayload, 'uploaderId'), false)
assert.equal(Object.hasOwn(teamSubmitPayload, 'source'), false)
assert.equal(originalTeam.coachId, 3, 'payload creation must not mutate the displayed detail')

const textPreviewState = rules.createTextPreviewState({
	mode: 'text',
	fileName: '背景说明.md',
	content: '# 团队背景',
	truncated: true
}, 'fallback.md')
assert.deepEqual(textPreviewState, {
	visible: true,
	fileName: '背景说明.md',
	content: '# 团队背景',
	truncated: true
})
assert.deepEqual(rules.createEmptyTextPreviewState(), {
	visible: false,
	fileName: '',
	content: '',
	truncated: false
})
assert.notEqual(rules.createEmptyTextPreviewState(), rules.createEmptyTextPreviewState())

console.log('team background rules: PASS')

const transportPath = path.join(__dirname, '../http/teamBackgroundFile.js')

async function loadTransport({ api = {}, uni = {}, wx = {} } = {}) {
	const source = fs.readFileSync(transportPath, 'utf8')
	const context = vm.createContext({ uni, wx })
	const baseApiModule = new vm.SyntheticModule(['BaseApi'], function () {
		this.setExport('BaseApi', 'https://api.example.test/app')
	}, { context, identifier: 'test:baseApi' })
	const apiModule = new vm.SyntheticModule(['default'], function () {
		this.setExport('default', api)
	}, { context, identifier: 'test:api' })
	const transportModule = new vm.SourceTextModule(source, {
		context,
		identifier: pathToFileURL(transportPath).href
	})

	await transportModule.link(specifier => {
		if (specifier === './baseApi.js') return baseApiModule
		if (specifier === './index.js') return apiModule
		throw new Error(`unexpected transport import: ${specifier}`)
	})
	await transportModule.evaluate()

	return transportModule.namespace
}

function assertNoIdentityFields(value) {
	if (!value || typeof value !== 'object') return
	for (const [key, child] of Object.entries(value)) {
		assert.ok(!['source', 'coachId', 'uploaderId'].includes(key), `unexpected identity field: ${key}`)
		assertNoIdentityFields(child)
	}
}

async function createUploadHarness(response, progress = 37) {
	let request
	const progressValues = []
	const uni = {
		getStorageSync(key) {
			assert.equal(key, 'token')
			return 'token-123'
		},
		uploadFile(options) {
			request = options
			return {
				onProgressUpdate(callback) {
					callback({ progress })
					setImmediate(() => options.success(response))
				}
			}
		}
	}
	const transport = await loadTransport({ uni })

	return {
		request: () => request,
		progressValues,
		promise: transport.uploadTeamBackgroundFile(12, '/tmp/brief.pdf', value => progressValues.push(value))
	}
}

async function testUploadTransport() {
	const stringHarness = await createUploadHarness({
		statusCode: 200,
		data: JSON.stringify({ code: 0, data: { id: 7 } })
	})
	assert.equal((await stringHarness.promise).id, 7)
	assert.equal(stringHarness.request().url, 'https://api.example.test/app/core/user/team/12/background-files')
	assert.equal(stringHarness.request().filePath, '/tmp/brief.pdf')
	assert.equal(stringHarness.request().name, 'file')
	assert.equal(stringHarness.request().header.token, 'token-123')
	assert.deepEqual(stringHarness.progressValues, [37])
	assertNoIdentityFields(stringHarness.request())

	const objectHarness = await createUploadHarness({ statusCode: 200, data: { code: 0, data: { id: 8 } } })
	assert.equal((await objectHarness.promise).id, 8)

	const statusHarness = await createUploadHarness({ statusCode: 500, data: { code: 0 } })
	await assert.rejects(statusHarness.promise, /上传失败，请重试/)

	const codeHarness = await createUploadHarness({ statusCode: 200, data: { code: 9, msg: '上传业务失败' } })
	await assert.rejects(codeHarness.promise, /上传业务失败/)

	const invalidJsonHarness = await createUploadHarness({ statusCode: 200, data: '<invalid-json>' })
	await assert.rejects(invalidJsonHarness.promise, /上传失败，请重试/)
}

async function testApiTransport() {
	const calls = []
	const api = {
		get(...args) {
			calls.push(['get', ...args])
			return Promise.resolve({ data: { code: 0, data: [{ id: 1 }] } })
		},
		del(...args) {
			calls.push(['del', ...args])
			return Promise.resolve({ data: { code: 0, data: true } })
		},
		post(...args) {
			calls.push(['post', ...args])
			return Promise.resolve({ data: { code: 0, data: { sessionId: 'session-1' } } })
		}
	}
	const transport = await loadTransport({ api })

	assert.deepEqual(await transport.listTeamBackgroundFiles(12), [{ id: 1 }])
	assert.equal(await transport.disableTeamBackgroundFile(12, 34), true)
	assert.deepEqual(await transport.createTeamBackgroundSession(12), { sessionId: 'session-1' })

	assert.equal(calls[0][0], 'get')
	assert.equal(calls[0][1], '/core/user/team/12/background-files')
	assert.equal(calls[1][0], 'del')
	assert.equal(calls[1][1], '/core/user/team/12/background-files/34')
	assert.equal(calls[2][0], 'post')
	assert.equal(calls[2][1], '/core/user/team/12/background-upload-session')
	for (const call of calls) {
		assert.equal(Object.keys(call[2]).length, 0)
		assert.equal(call[3], false)
		assertNoIdentityFields(call)
	}

	const failingTransport = await loadTransport({
		api: {
			get: () => Promise.resolve({ data: { code: 3, msg: '列表业务失败' } })
		}
	})
	await assert.rejects(failingTransport.listTeamBackgroundFiles(12), /列表业务失败/)

	assert.equal(transport.uploadTeamBackgroundFile.length, 2)
	assert.equal(transport.listTeamBackgroundFiles.length, 1)
	assert.equal(transport.disableTeamBackgroundFile.length, 2)
	assert.equal(transport.createTeamBackgroundSession.length, 1)
	assert.equal(transport.downloadTeamBackgroundFile.length, 2)
}

const TEXT_PREVIEW_LIMIT = 256 * 1024

async function createDownloadHarness({ result, responseHeaders, downloadError, openError,
	fileSize, fileContent = '', fileInfoError, readError, withHeadersListener = true } = {}) {
	let request
	let openRequest
	let fileInfoRequest
	let readRequest
	let fileSystemManagerCalls = 0
	const resolvedFileSize = fileSize === undefined
		? Buffer.byteLength(fileContent, 'utf8')
		: fileSize
	const uni = {
		getStorageSync(key) {
			assert.equal(key, 'token')
			return 'token-456'
		},
		downloadFile(options) {
			request = options
			setImmediate(() => {
				if (downloadError) options.fail(downloadError)
				else options.success(result)
			})
			if (!withHeadersListener) return {}
			return {
				onHeadersReceived(callback) {
					if (responseHeaders) callback({ header: responseHeaders })
				}
			}
		}
	}
	const wx = {
		openDocument(options) {
			openRequest = options
			setImmediate(() => {
				if (openError) options.fail(openError)
				else options.success('opened')
			})
		},
		getFileSystemManager() {
			fileSystemManagerCalls += 1
			return {
				getFileInfo(options) {
					fileInfoRequest = options
					setImmediate(() => {
						if (fileInfoError) options.fail(fileInfoError)
						else options.success({ size: resolvedFileSize })
					})
				},
				readFile(options) {
					readRequest = options
					setImmediate(() => {
						if (readError) options.fail(readError)
						else options.success({ data: fileContent })
					})
				}
			}
		}
	}
	const transport = await loadTransport({ uni, wx })

	return {
		request: () => request,
		openRequest: () => openRequest,
		fileInfoRequest: () => fileInfoRequest,
		readRequest: () => readRequest,
		fileSystemManagerCalls: () => fileSystemManagerCalls,
		promise: transport.downloadTeamBackgroundFile(12, 34)
	}
}

async function testDownloadTransport() {
	const successHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/download.pdf' },
		responseHeaders: {
			'cOnTeNt-TyPe': 'application/pdf',
			'CONTENT-disPOSITION': 'attachment; filename="download.pdf"'
		}
	})
	assert.equal(await successHarness.promise, 'opened')
	assert.equal(successHarness.request().url, 'https://api.example.test/app/core/user/team/12/background-files/34/download')
	assert.equal(successHarness.request().header.token, 'token-456')
	assert.equal(successHarness.openRequest().filePath, '/tmp/download.pdf')
	assert.equal(successHarness.openRequest().showMenu, true)
	assertNoIdentityFields(successHarness.request())

	const resultHeaderHarness = await createDownloadHarness({
		result: {
			statusCode: 200,
			tempFilePath: '/tmp/result-header.docx',
			header: {
				'content-type': 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
				'content-disposition': 'attachment; filename="result-header.docx"'
			}
		},
		withHeadersListener: false
	})
	assert.equal(await resultHeaderHarness.promise, 'opened')
	assert.equal(resultHeaderHarness.fileSystemManagerCalls(), 0)

	const txtHarness = await createDownloadHarness({
		result: {
			statusCode: 200,
			tempFilePath: '/tmp/text-preview.txt',
			headers: {
				'Content-Type': 'text/plain; charset=UTF-8',
				'Content-Disposition': 'attachment; filename="fallback.txt"; '
					+ "filename*=UTF-8''%E8%83%8C%E6%99%AF%20%E8%B5%84%E6%96%99.txt"
			}
		},
		fileSize: 5,
		fileContent: 'hello',
		withHeadersListener: false
	})
	const txtPreview = await txtHarness.promise
	assert.equal(txtHarness.openRequest(), undefined, 'txt must not call openDocument')
	assert.equal(txtPreview.mode, 'text')
	assert.equal(txtPreview.fileName, '背景 资料.txt')
	assert.equal(txtPreview.content, 'hello')
	assert.equal(txtPreview.truncated, false)
	assert.equal(txtHarness.fileInfoRequest().filePath, '/tmp/text-preview.txt')
	assert.equal(txtHarness.readRequest().filePath, '/tmp/text-preview.txt')
	assert.equal(txtHarness.readRequest().encoding, 'utf8')
	assert.equal(txtHarness.readRequest().position, 0)
	assert.equal(txtHarness.readRequest().length, 5)

	const mdContent = 'm'.repeat(TEXT_PREVIEW_LIMIT)
	const mdHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/guide.md' },
		responseHeaders: {
			'Content-Type': 'text/markdown; charset=UTF-8',
			'Content-Disposition': 'attachment; filename="guide.md"'
		},
		fileSize: 50 * 1024 * 1024,
		fileContent: mdContent
	})
	const mdPreview = await mdHarness.promise
	assert.equal(mdHarness.openRequest(), undefined)
	assert.equal(mdPreview.mode, 'text')
	assert.equal(mdPreview.fileName, 'guide.md')
	assert.equal(mdPreview.content.length, TEXT_PREVIEW_LIMIT)
	assert.equal(mdPreview.truncated, true)
	assert.equal(mdHarness.readRequest().length, TEXT_PREVIEW_LIMIT)

	const csvContent = 'c'.repeat(TEXT_PREVIEW_LIMIT)
	const csvHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/data.csv' },
		responseHeaders: {
			'Content-Type': 'text/csv',
			'Content-Disposition': 'attachment; filename=data.csv'
		},
		fileSize: TEXT_PREVIEW_LIMIT,
		fileContent: csvContent
	})
	const csvPreview = await csvHarness.promise
	assert.equal(csvHarness.openRequest(), undefined)
	assert.equal(csvPreview.mode, 'text')
	assert.equal(csvPreview.fileName, 'data.csv')
	assert.equal(csvPreview.content.length, TEXT_PREVIEW_LIMIT)
	assert.equal(csvPreview.truncated, false)
	assert.equal(csvHarness.readRequest().length, TEXT_PREVIEW_LIMIT)

	const fileInfoFailureHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/file-info-failure.txt' },
		responseHeaders: {
			'Content-Type': 'text/plain',
			'Content-Disposition': 'attachment; filename="file-info-failure.txt"'
		},
		fileInfoError: new Error('getFileInfo failed')
	})
	await assert.rejects(fileInfoFailureHarness.promise, /文件读取失败，请重试/)
	assert.equal(fileInfoFailureHarness.openRequest(), undefined)
	assert.equal(fileInfoFailureHarness.readRequest(), undefined)

	const readFailureHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/read-failure.md' },
		responseHeaders: {
			'Content-Type': 'text/markdown',
			'Content-Disposition': 'attachment; filename="read-failure.md"'
		},
		fileSize: 10,
		readError: new Error('readFile failed')
	})
	await assert.rejects(readFailureHarness.promise, /文件读取失败，请重试/)
	assert.equal(readFailureHarness.openRequest(), undefined)

	const unknownExtensionHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/unknown-file' },
		responseHeaders: {
			'Content-Type': 'application/octet-stream',
			'Content-Disposition': 'attachment; filename="archive.zip"'
		}
	})
	await assert.rejects(unknownExtensionHarness.promise, /文件类型不支持预览/)
	assert.equal(unknownExtensionHarness.openRequest(), undefined)
	assert.equal(unknownExtensionHarness.fileSystemManagerCalls(), 0)

	const jsonHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/error.json' },
		responseHeaders: {
			'Content-Type': 'application/json;charset=UTF-8',
			'Content-Disposition': 'attachment; filename="error.json"'
		}
	})
	await assert.rejects(jsonHarness.promise, /下载失败，请重试/)
	assert.equal(jsonHarness.openRequest(), undefined)

	const htmlHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/error.html' },
		responseHeaders: {
			'content-type': 'text/html; charset=UTF-8',
			'content-disposition': 'attachment; filename="error.html"'
		}
	})
	await assert.rejects(htmlHarness.promise, /下载失败，请重试/)
	assert.equal(htmlHarness.openRequest(), undefined)

	const missingHeadersHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/unknown.pdf' },
		withHeadersListener: false
	})
	await assert.rejects(missingHeadersHarness.promise, /下载失败，请重试/)
	assert.equal(missingHeadersHarness.openRequest(), undefined)

	const statusHarness = await createDownloadHarness({ result: { statusCode: 500 } })
	await assert.rejects(statusHarness.promise, /下载失败，请重试/)
	assert.equal(statusHarness.openRequest(), undefined)

	const downloadError = new Error('download network error')
	const downloadFailureHarness = await createDownloadHarness({ downloadError })
	await assert.rejects(downloadFailureHarness.promise, /download network error/)

	const openError = new Error('open document error')
	const openFailureHarness = await createDownloadHarness({
		result: { statusCode: 200, tempFilePath: '/tmp/download.pdf' },
		responseHeaders: {
			'Content-Type': 'application/pdf',
			'Content-Disposition': 'attachment; filename="download.pdf"'
		},
		openError
	})
	await assert.rejects(openFailureHarness.promise, /open document error/)
}

async function main() {
	const loadedTransport = await loadTransport()
	assert.equal(typeof loadedTransport.downloadTeamBackgroundFile, 'function')
	await testUploadTransport()
	await testApiTransport()
	await testDownloadTransport()
	console.log('team background transport: PASS')
}

main().catch(error => {
	console.error(error)
	process.exitCode = 1
})