import Foundation
import Testing
import HostRegistry

// AccessToken:边界校验 + "零泄漏"表示。
// 契约来源:协调 doc §1.1 —— 字符集 `[A-Za-z0-9._~+/=-]`、长度 16–512
// (与服务端 src/config.ts:178 的 WEBTERM_TOKEN_RE 逐字一致);令牌是密级材料,
// 绝不进日志 / URL / 崩溃报告(§5.3)。

// MARK: - 边界校验(字符集)

@Test("合法令牌:覆盖全字符集 → 构造成功且 rawValue 逐字保真")
func validTokenPreservesRawValueVerbatim() throws {
    // Arrange
    let raw = Fixtures.validTokenString

    // Act
    let token = try AccessToken(validating: raw)

    // Assert
    #expect(token.rawValue == raw)
}

@Test("非法字符 → .invalidCharacters", arguments: [
    "abcdefghijklmno p",      // 空格
    "abcdefghijklmnop!",      // 感叹号
    "abcdefghijklmnop%",      // 百分号(需 URL 编码 → 不在 cookie-safe 集里)
    "abcdefghijklmnop,",      // 逗号(cookie 分隔符)
    "abcdefghijklmnop;",      // 分号(cookie 分隔符)
    "abcdefghijklmnop令",     // 非 ASCII
])
func invalidCharactersAreRejectedWithTypedError(raw: String) {
    // Act / Assert
    #expect(throws: AccessTokenError.invalidCharacters) {
        _ = try AccessToken(validating: raw)
    }
}

@Test("非法字符错误不携带令牌内容(错误对象本身不得成为泄漏面)")
func invalidCharactersErrorCarriesNoTokenPayload() {
    // Arrange
    let secretish = "supersecret-tail!!!!!!"

    // Act
    var captured = ""
    do {
        _ = try AccessToken(validating: secretish)
        Issue.record("期望抛错,实际构造成功")
    } catch {
        captured = String(describing: error) + String(reflecting: error)
    }

    // Assert
    #expect(captured.isEmpty == false)
    #expect(captured.contains("supersecret") == false)
}

// MARK: - 边界校验(长度)

@Test("长度下限:15 → .tooShort(15)")
func tokenBelowMinimumLengthIsRejected() {
    // Act / Assert
    #expect(throws: AccessTokenError.tooShort(length: 15)) {
        _ = try AccessToken(validating: Fixtures.tokenString(length: 15))
    }
}

@Test("长度下限:恰好 16 → 通过")
func tokenAtMinimumLengthIsAccepted() throws {
    // Act
    let token = try AccessToken(validating: Fixtures.tokenString(length: AccessToken.minLength))

    // Assert
    #expect(token.rawValue.count == 16)
}

@Test("长度上限:恰好 512 → 通过")
func tokenAtMaximumLengthIsAccepted() throws {
    // Act
    let token = try AccessToken(validating: Fixtures.tokenString(length: AccessToken.maxLength))

    // Assert
    #expect(token.rawValue.count == 512)
}

@Test("长度上限:513 → .tooLong(513)")
func tokenAboveMaximumLengthIsRejected() {
    // Act / Assert
    #expect(throws: AccessTokenError.tooLong(length: 513)) {
        _ = try AccessToken(validating: Fixtures.tokenString(length: 513))
    }
}

@Test("空串 → .tooShort(0)(不是 invalidCharacters:先判长度更贴近用户话术)")
func emptyTokenIsRejectedAsTooShort() {
    // Act / Assert
    #expect(throws: AccessTokenError.tooShort(length: 0)) {
        _ = try AccessToken(validating: "")
    }
}

// MARK: - 粘贴 UX:首尾空白裁剪

@Test("首尾空白/换行被裁剪后再校验:合法令牌不受影响(空白永非合法令牌字符)")
func surroundingWhitespaceIsTrimmedBeforeValidation() throws {
    // Arrange
    let pasted = "  \n\t" + Fixtures.validTokenString + " \n"

    // Act
    let token = try AccessToken(validating: pasted)

    // Assert
    #expect(token.rawValue == Fixtures.validTokenString)
}

@Test("中间空白不被裁剪:仍是 .invalidCharacters(不做静默规范化)")
func interiorWhitespaceIsStillInvalid() {
    // Act / Assert
    #expect(throws: AccessTokenError.invalidCharacters) {
        _ = try AccessToken(validating: "abcdefgh ijklmnop")
    }
}

@Test("init?(rawValue:) 宽松入口:非法 → nil,不抛")
func lenientRawValueInitReturnsNilForInvalidToken() {
    // Act / Assert
    #expect(AccessToken(rawValue: "too-short") == nil)
    #expect(AccessToken(rawValue: Fixtures.validTokenString)?.rawValue == Fixtures.validTokenString)
}

// MARK: - §5.3 零泄漏表示

@Test("§5.3 description/debugDescription 不含令牌,只给长度")
func stringRepresentationsRedactTheToken() {
    // Arrange
    let token = Fixtures.makeToken()

    // Act
    let description = token.description
    let debugDescription = token.debugDescription

    // Assert
    #expect(description.contains(Fixtures.validTokenString) == false)
    #expect(debugDescription.contains(Fixtures.validTokenString) == false)
    #expect(description.contains("redacted"))
    #expect(description.contains("\(Fixtures.validTokenString.count)"))
}

@Test("§5.3 String(describing:)/String(reflecting:) 也不泄漏(插值即日志的默认路径)")
func interpolationPathsRedactTheToken() {
    // Arrange
    let token = Fixtures.makeToken()

    // Act
    let interpolated = "token=\(token)"

    // Assert
    #expect(interpolated.contains(Fixtures.validTokenString) == false)
    #expect(String(describing: token).contains(Fixtures.validTokenString) == false)
    #expect(String(reflecting: token).contains(Fixtures.validTokenString) == false)
}

@Test("§5.3 Mirror/dump 反射不泄漏令牌(崩溃报告与 dump 是常见旁路)")
func reflectionDoesNotExposeTheToken() {
    // Arrange
    let token = Fixtures.makeToken()

    // Act
    let children = Mirror(reflecting: token).children.map { String(describing: $0.value) }
    var dumped = ""
    dump(token, to: &dumped)

    // Assert
    #expect(children.contains(where: { $0.contains(Fixtures.validTokenString) }) == false)
    #expect(dumped.contains(Fixtures.validTokenString) == false)
}

@Test("§5.3 Host 的字符串表示不含令牌,只标注是否已配置")
func hostStringRepresentationRedactsTheToken() {
    // Arrange
    let host = Fixtures.makeHost().withAccessToken(Fixtures.makeToken())

    // Act
    let described = String(describing: host)
    let reflected = String(reflecting: host)
    var dumped = ""
    dump(host, to: &dumped)

    // Assert
    #expect(described.contains(Fixtures.validTokenString) == false)
    #expect(reflected.contains(Fixtures.validTokenString) == false)
    #expect(dumped.contains(Fixtures.validTokenString) == false)
    #expect(described.contains("hasAccessToken: true"))
    #expect(String(describing: Fixtures.makeHost()).contains("hasAccessToken: false"))
}

// MARK: - 值语义

@Test("Equatable/Hashable:同值相等且同 hash,异值不等")
func tokenValueSemanticsAreByRawValue() {
    // Arrange
    let a = Fixtures.makeToken()
    let b = Fixtures.makeToken()
    let other = Fixtures.makeToken(Fixtures.otherValidTokenString)

    // Assert
    #expect(a == b)
    #expect(a.hashValue == b.hashValue)
    #expect(a != other)
}