// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-present Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package plugins

import "sync"

// Registry keeps track of loaded plugins.
type Registry struct {
	mu      sync.RWMutex
	plugins map[string]Plugin
}

// NewRegistry creates a new Registry.
func NewRegistry() *Registry {
	return &Registry{plugins: make(map[string]Plugin)}
}

// Add registers a plugin.
func (r *Registry) Add(p Plugin) {
	r.mu.Lock()
	defer r.mu.Unlock()
	r.plugins[p.Name()] = p
}

// All returns all registered plugins.
func (r *Registry) All() []Plugin {
	r.mu.RLock()
	defer r.mu.RUnlock()
	res := make([]Plugin, 0, len(r.plugins))
	for _, p := range r.plugins {
		res = append(res, p)
	}
	return res
}