/
modules.go
128 lines (105 loc) · 3.03 KB
/
modules.go
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// 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 <http://www.gnu.org/licenses/>.
package modules
import (
"encoding/json"
"fmt"
"github.com/nmeum/marvin/irc"
"io/ioutil"
"os"
"path/filepath"
"strings"
)
type Module interface {
Name() string
Help() string
Load(*irc.Client) error
Defaults()
}
type ModuleSet struct {
client *irc.Client
modules []Module
configs string
}
func NewModuleSet(client *irc.Client, configs string) *ModuleSet {
return &ModuleSet{client: client, configs: configs}
}
func (m *ModuleSet) Register(module Module) {
m.modules = append(m.modules, module)
}
func (m *ModuleSet) LoadAll() error {
if err := os.MkdirAll(m.configs, 0755); err != nil {
return err
}
for _, module := range m.modules {
fn := fmt.Sprintf("%s.json", module.Name())
fp := filepath.Join(m.configs, fn)
module.Defaults()
data, err := ioutil.ReadFile(fp)
if err == nil {
if err := json.Unmarshal(data, &module); err != nil {
return err
}
} else if !os.IsNotExist(err) {
return err
}
if err := module.Load(m.client); err != nil {
return err
}
}
m.client.CmdHook("privmsg", m.helpCmd)
m.client.CmdHook("privmsg", m.moduleCmd)
m.client.CmdHook("privmsg", m.modulesCmd)
return nil
}
func (m *ModuleSet) findModule(name string) Module {
for _, module := range m.modules {
if module.Name() == name {
return module
}
}
return nil
}
func (m *ModuleSet) helpCmd(client *irc.Client, msg irc.Message) error {
if msg.Data != "!help" {
return nil
}
return client.Write("NOTICE %s :%s", msg.Receiver,
"Use !help MODULE to see the help message for the given module, use !modules to list all modules.")
}
func (m *ModuleSet) modulesCmd(client *irc.Client, msg irc.Message) error {
if msg.Data != "!modules" || len(m.modules) <= 0 {
return nil
}
var names []string
for _, module := range m.modules {
names = append(names, module.Name())
}
help := fmt.Sprintf("The following modules are available: %s",
strings.Join(names, ", "))
return client.Write("NOTICE %s :%s", msg.Receiver, help)
}
func (m *ModuleSet) moduleCmd(client *irc.Client, msg irc.Message) error {
splited := strings.Fields(msg.Data)
if len(splited) < 2 || splited[0] != "!help" {
return nil
}
name := strings.ToLower(splited[1])
module := m.findModule(name)
if module == nil {
return client.Write("NOTICE %s :Module %q isn't installed",
msg.Receiver, name)
}
return client.Write("NOTICE %s :%s: %s",
msg.Receiver, module.Name(), module.Help())
}