using Inversion;
using Spry;
using Spry.Authentication;
using Statum;
using ClankerSaddle.Services;

namespace ClankerSaddle {

    /** Sealed saddle id carried by the saddle row actions. */
    public class SaddleActionPrivate : Object {
        public int64 saddle_id { get; set; }
    }

    /**
     * Registers a saddle container (admin-only): name plus the host:port
     * of its control server.
     */
    public class RegisterSaddleAction : StatumAction {

        private SaddleService saddles = inject<SaddleService>();
        private UserService users = inject<UserService>();

        public override async DirectiveBuilder handle() throws GLib.Error {
            var guard = yield SpryAuth.require_permission(directives(), request, users,
                SpryAuth.ADMIN_PERMISSION, "/login");
            if (guard != null) {
                return (!)guard;
            }

            string name = Forms.field(request, "name");
            string host = Forms.field(request, "host");
            if (name.length == 0 || host.length == 0) {
                return directives().notify("error", "Name and host are required").navigate("/saddles");
            }

            try {
                var registration = yield saddles.register_saddle(name, host);
                return directives().notify("success",
                        @"Saddle '$(registration.saddle.name)' registered — API token $(registration.token)")
                    .navigate("/saddles");
            } catch (Error e) {
                return directives().notify("error", @"Could not register the saddle: $(e.message)").navigate("/saddles");
            }
        }
    }

    /**
     * Removes a saddle registration (admin-only); a task it was still
     * running is re-queued.
     */
    public class UnregisterSaddleAction : TypedStatumAction<SaddleActionPrivate> {

        private SaddleService saddles = inject<SaddleService>();
        private TaskService tasks = inject<TaskService>();
        private UserService users = inject<UserService>();

        protected override Type private_type { get { return typeof(SaddleActionPrivate); } }

        public override async DirectiveBuilder handle() throws GLib.Error {
            var guard = yield SpryAuth.require_permission(directives(), request, users,
                SpryAuth.ADMIN_PERMISSION, "/login");
            if (guard != null) {
                return (!)guard;
            }

            var ctx = request_private;
            if (ctx == null) {
                return directives().navigate("/saddles");
            }

            try {
                yield saddles.abort_saddle_session(tasks, ((!)ctx).saddle_id, "saddle removed");
                yield saddles.unregister_saddle(((!)ctx).saddle_id);
                return directives().notify("success", "Saddle removed").navigate("/saddles");
            } catch (Error e) {
                return directives().notify("error", @"Could not remove the saddle: $(e.message)").navigate("/saddles");
            }
        }
    }

    /**
     * Probes a saddle's control server and refreshes its registered
     * status (idle, busy or offline) — the manual counterpart of the
     * dispatcher's polling.
     */
    /**
     * Saves a saddle's git identity (`git_name` / `git_email`): the
     * name/email the daemon commits as — sent with every assignment as
     * `git_identity`; empty values clear the fields so the daemon's
     * fallback identity applies.
     */
    public class UpdateSaddleIdentityAction : TypedStatumAction<SaddleActionPrivate> {

        private SaddleService saddles = inject<SaddleService>();
        private UserService users = inject<UserService>();

        protected override Type private_type { get { return typeof(SaddleActionPrivate); } }

        public override async DirectiveBuilder handle() throws GLib.Error {
            var guard = yield SpryAuth.require_permission(directives(), request, users,
                SpryAuth.ADMIN_PERMISSION, "/login");
            if (guard != null) {
                return (!)guard;
            }

            var ctx = request_private;
            if (ctx == null) {
                return directives().navigate("/saddles");
            }

            try {
                yield saddles.update_git_identity(((!)ctx).saddle_id,
                    Forms.optional(request, "git_name"),
                    Forms.optional(request, "git_email"));
                return directives().notify("success", "Git identity saved").navigate("/saddles");
            } catch (Error e) {
                return directives().notify("error", @"Could not save the identity: $(e.message)")
                    .navigate("/saddles");
            }
        }
    }

    public class RefreshSaddleStatusAction : TypedStatumAction<SaddleActionPrivate> {

        private SaddleService saddles = inject<SaddleService>();
        private UserService users = inject<UserService>();

        protected override Type private_type { get { return typeof(SaddleActionPrivate); } }

        public override async DirectiveBuilder handle() throws GLib.Error {
            var guard = yield SpryAuth.require_permission(directives(), request, users,
                SpryAuth.ADMIN_PERMISSION, "/login");
            if (guard != null) {
                return (!)guard;
            }

            var ctx = request_private;
            if (ctx == null) {
                return directives().navigate("/saddles");
            }

            try {
                yield saddles.refresh_saddle_status(((!)ctx).saddle_id);
                return directives().notify("success", "Saddle status refreshed").navigate("/saddles");
            } catch (Error e) {
                return directives().notify("error", @"Could not refresh the saddle: $(e.message)").navigate("/saddles");
            }
        }
    }
}