from flask import Blueprint, request, redirect, flash, session
from auth import require_level
from config_utils import (flush_pending_to_queue, get_dashboard_pending,
                          revert_snapshot_to_config, queued_msg,
                          _is_locked, _format_timing, _seconds_until_next_run)

bp = Blueprint('action_actions', __name__)

_VIEW = '/view/view_actions'


@bp.route('/action/actions_cardpending_save', methods=['POST'])
@require_level('administrator')
def actions_cardpending_save():
    session['apply_changes_immediately'] = 'apply_changes_immediately' in request.form
    flash('Preference saved.', 'success')
    return redirect(_VIEW)


@bp.route('/action/actions_cardpending_applynow', methods=['POST'])
@require_level('administrator')
def actions_cardpending_applynow():
    if not get_dashboard_pending():
        flash('No pending changes to apply.', 'info')
        return redirect(_VIEW)
    flush_pending_to_queue()
    if _is_locked():
        msg = 'Changes queued. They are being applied now.'
    else:
        timing = _format_timing(_seconds_until_next_run())
        if timing:
            msg = f'Changes queued. They will be applied {timing}.'
        else:
            msg = 'Changes queued. The processing service is not running.'
    flash(msg, 'success')
    return redirect(_VIEW)


@bp.route('/action/queue_core_apply', methods=['POST'])
@require_level('administrator')
def queue_core_apply():
    flash(queued_msg('core apply', action_label='Apply queued'), 'success')
    return redirect(_VIEW)


@bp.route('/action/actions_cardhistory_revertselected', methods=['POST'])
@require_level('administrator')
def actions_cardhistory_revertselected():
    selected_uuids = request.form.getlist('selected_uuids')
    if not selected_uuids:
        flash('No items selected.', 'info')
        return redirect(_VIEW)
    succeeded, failed = 0, 0
    for uuid in selected_uuids:
        msg, ok = revert_snapshot_to_config(uuid)
        if ok:
            succeeded += 1
        else:
            flash(msg, 'error')
            failed += 1
    if succeeded:
        plural = 's' if succeeded != 1 else ''
        flash(f'{succeeded} change{plural} reverted.', 'success')
    return redirect(_VIEW)