import Foundation

/// The `dashboard` command: the same account aggregate as the web
/// dashboard, in one read. Newer arrays default empty so an updated app
/// can still talk to a server from before the dashboard parity contract.
nonisolated struct DashboardData: Decodable, Sendable, Hashable {
    let reviewQueue: [DashboardItem]
    let assignedIssues: [DashboardItem]
    let openMRs: [DashboardItem]
    let openIssues: [DashboardItem]
    /// Pinned repos share `repo list`'s row shape.
    let pinned: [RepoSummary]
    let recentActivity: [FeedEvent]
    /// Retained by the CLI for compatibility; builds are not a web
    /// dashboard section.
    let builds: [DashboardBuild]

    enum CodingKeys: String, CodingKey {
        case pinned, builds
        case reviewQueue = "review_queue"
        case openMRs = "open_mrs"
        case assignedIssues = "assigned_issues"
        case openIssues = "open_issues"
        case recentActivity = "recent_activity"
    }

    init(from decoder: any Decoder) throws {
        let values = try decoder.container(keyedBy: CodingKeys.self)
        reviewQueue = try values.decodeIfPresent([DashboardItem].self, forKey: .reviewQueue) ?? []
        assignedIssues = try values.decodeIfPresent([DashboardItem].self, forKey: .assignedIssues) ?? []
        openMRs = try values.decodeIfPresent([DashboardItem].self, forKey: .openMRs) ?? []
        openIssues = try values.decodeIfPresent([DashboardItem].self, forKey: .openIssues) ?? []
        pinned = try values.decodeIfPresent([RepoSummary].self, forKey: .pinned) ?? []
        recentActivity = try values.decodeIfPresent([FeedEvent].self, forKey: .recentActivity) ?? []
        builds = try values.decodeIfPresent([DashboardBuild].self, forKey: .builds) ?? []
    }
}

/// One open issue or MR row, repo resolved server-side.
nonisolated struct DashboardItem: Decodable, Sendable, Hashable, Identifiable {
    let repo: String
    let number: Int64
    let title: String
    let author: String
    let state: String
    let updatedAt: Date

    enum CodingKeys: String, CodingKey {
        case repo, number, title, author, state
        case updatedAt = "updated_at"
    }

    var id: String { "\(repo)#\(number)" }
}

/// One build row with its repo attached.
nonisolated struct DashboardBuild: Decodable, Sendable, Hashable, Identifiable {
    let repo: String
    let number: Int64
    let job: String
    let status: String
    let sha: String
    let ref: String
    let createdAt: Date
    let finishedAt: Date?

    enum CodingKeys: String, CodingKey {
        case repo, number, job, status, sha, ref
        case createdAt = "created_at"
        case finishedAt = "finished_at"
    }

    var id: String { "\(repo)#\(number)" }
}