#pragma once

#include <QDateTime>
#include <QSettings>
#include <QString>

// Persists the non-secret settings (base URL, username, last post) in a
// QSettings INI under ~/.config, and the password in the system keychain
// (libsecret / kwallet via QtKeychain). The password never lands on disk in the
// clear, mirroring the Android app's Keystore sealing.
class Settings
{
public:
    struct LastPost {
        QString slug;
        QString url;
        QString caption;
        QDateTime postedAt;
        bool valid() const { return !slug.isEmpty(); }
    };

    Settings();

    QString baseUrl() const;
    void setBaseUrl(const QString &value);

    QString username() const;
    void setUsername(const QString &value);

    // Max photos uploaded at once in a bulk post, clamped to [1, kMaxConcurrency].
    static constexpr int kMaxConcurrency = 8;
    static constexpr int kDefaultConcurrency = 3;
    int concurrency() const;
    void setConcurrency(int value);

    // Keychain access is synchronous here (a local event loop): the app does
    // nothing until the credential is in hand, and there is no background retry
    // worker as on Android that would need it off the UI thread.
    QString readPassword() const;
    void writePassword(const QString &value) const;

    bool isConfigured() const;

    LastPost lastPost() const;
    void setLastPost(const LastPost &value);

    // Returns an error message, or an empty string when the URL is usable.
    // https is required: Basic auth would otherwise send the password in the
    // clear.
    static QString validateBaseUrl(const QString &raw);

    // Trims trailing slashes and a trailing "/upload" (the endpoint path a user
    // pasting the upload URL would leave on — the client appends it itself).
    static QString normalizeBaseUrl(const QString &raw);

private:
    mutable QSettings m_settings;
};