import Foundation

public enum RepositoryError: Error, Equatable, Sendable {
    case invalidOrigin
    case duplicateOrigin
    case revisionConflict
    case notFound
    case databaseFailed
}

public struct Instance: Codable, Equatable, Identifiable, Sendable {
    public let id: UUID
    public var name: String
    public var origin: URL
    public var tags: [String]
    public var credentialConfigured: Bool
    public var configRevision: Int
    public let createdAt: Date
    public var updatedAt: Date

    public init(
        id: UUID,
        name: String,
        origin: URL,
        tags: [String] = [],
        credentialConfigured: Bool = false,
        configRevision: Int = 1,
        createdAt: Date,
        updatedAt: Date
    ) {
        self.id = id
        self.name = name
        self.origin = origin
        self.tags = tags
        self.credentialConfigured = credentialConfigured
        self.configRevision = configRevision
        self.createdAt = createdAt
        self.updatedAt = updatedAt
    }
}

public struct InstanceInput: Sendable {
    public var name: String
    public var origin: URL
    public var tags: [String]
    public var password: String?

    public init(
        name: String,
        origin: URL,
        tags: [String] = [],
        password: String? = nil
    ) {
        self.name = name
        self.origin = origin
        self.tags = tags
        self.password = password
    }
}

public struct InstancePatch: Sendable {
    public var name: String?
    public var origin: URL?
    public var tags: [String]?
    public var password: String?

    public init(
        name: String? = nil,
        origin: URL? = nil,
        tags: [String]? = nil,
        password: String? = nil
    ) {
        self.name = name
        self.origin = origin
        self.tags = tags
        self.password = password
    }
}

public struct InstanceQuery: Sendable {
    public var search: String?
    public var tags: [String]?

    public init(search: String? = nil, tags: [String]? = nil) {
        self.search = search
        self.tags = tags
    }
}

public protocol InstanceRepository: Sendable {
    func list(_ query: InstanceQuery) async throws -> [Instance]
    func get(_ id: UUID) async throws -> Instance?
    func create(_ input: InstanceInput) async throws -> Instance
    func update(_ id: UUID, expectedRevision: Int, _ patch: InstancePatch) async throws -> Instance
    func delete(_ id: UUID, expectedRevision: Int) async throws
}