//
//  LicensesView.swift
//  Bedrock
//
//  Created by Matt Bruce on 1/4/26.
//

import SwiftUI

// MARK: - License Model

/// Represents an open source license for a third-party library
public struct License: Identifiable, Sendable {
    public let id: String
    public let name: String
    public let url: String
    public let licenseType: String
    public let description: String
    
    public init(
        name: String,
        url: String,
        licenseType: String,
        description: String
    ) {
        self.id = name
        self.name = name
        self.url = url
        self.licenseType = licenseType
        self.description = description
    }
}

// MARK: - Licenses View

/// A reusable view for displaying open source licenses
public struct LicensesView: View {
    public let licenses: [License]
    public let backgroundColor: Color
    public let cardBackgroundColor: Color
    public let cardBorderColor: Color
    public let accentColor: Color
    public let navigationTitle: String
    
    public init(
        licenses: [License],
        backgroundColor: Color = .Surface.overlay,
        cardBackgroundColor: Color = .Surface.card,
        cardBorderColor: Color = .Border.subtle,
        accentColor: Color = .Accent.primary,
        navigationTitle: String = String(localized: "Open Source Licenses")
    ) {
        self.licenses = licenses
        self.backgroundColor = backgroundColor
        self.cardBackgroundColor = cardBackgroundColor
        self.cardBorderColor = cardBorderColor
        self.accentColor = accentColor
        self.navigationTitle = navigationTitle
    }
    
    public var body: some View {
        ScrollView {
            VStack(alignment: .leading, spacing: Design.Spacing.large) {
                ForEach(licenses) { license in
                    licenseCard(license)
                }
            }
            .padding(Design.Spacing.large)
        }
        .background(backgroundColor)
        .navigationTitle(navigationTitle)
        .navigationBarTitleDisplayMode(.inline)
    }
    
    private func licenseCard(_ license: License) -> some View {
        SettingsCard(backgroundColor: cardBackgroundColor, borderColor: cardBorderColor) {
            VStack(alignment: .leading, spacing: Design.Spacing.small) {
                Text(license.name)
                    .font(Design.Typography.bodyBold)
                    .foregroundStyle(.white)

                Text(license.description)
                    .font(Design.Typography.caption)
                    .foregroundStyle(.white.opacity(Design.Opacity.strong))

                HStack {
                    Label(license.licenseType, systemImage: "doc.text")
                        .font(Design.Typography.captionSmall)
                        .foregroundStyle(accentColor)

                    Spacer()

                    if let linkURL = URL(string: license.url) {
                        Link(destination: linkURL) {
                            Label(String(localized: "View on GitHub"), systemImage: "arrow.up.right.square")
                                .font(Design.Typography.captionSmall)
                                .foregroundStyle(accentColor)
                        }
                    }
                }
                .padding(.top, Design.Spacing.xSmall)
            }
        }
    }
}