import Foundation

enum IngestedSourceKind: String, Codable, Sendable, CaseIterable {
    case text
    case pdf
    case file

    var label: String {
        switch self {
        case .text: "Text"
        case .pdf: "PDF"
        case .file: "File"
        }
    }
}

struct IngestedSource: Identifiable, Codable, Sendable, Hashable {
    let id: UUID
    var kind: IngestedSourceKind
    var title: String
    var bodyText: String
    var originalFilename: String?
    var localFilename: String?
    var tags: [String]
    var createdAt: Date
    var modifiedAt: Date

    init(
        id: UUID = UUID(),
        kind: IngestedSourceKind,
        title: String,
        bodyText: String,
        originalFilename: String? = nil,
        localFilename: String? = nil,
        tags: [String] = [],
        createdAt: Date = Date(),
        modifiedAt: Date = Date()
    ) {
        self.id = id
        self.kind = kind
        self.title = title
        self.bodyText = bodyText
        self.originalFilename = originalFilename
        self.localFilename = localFilename
        self.tags = tags
        self.createdAt = createdAt
        self.modifiedAt = modifiedAt
    }

    var displayTitle: String {
        let trimmed = title.trimmingCharacters(in: .whitespacesAndNewlines)
        if !trimmed.isEmpty { return trimmed }
        return originalFilename ?? kind.label
    }

    var excerpt: String {
        bodyText
            .trimmingCharacters(in: .whitespacesAndNewlines)
            .replacingOccurrences(of: "\n", with: " ")
    }

    var podcastURL: String {
        "marks-source://\(id.uuidString)"
    }

    var podcastText: String {
        String(bodyText.trimmingCharacters(in: .whitespacesAndNewlines).prefix(100_000))
    }
}