gosora/common/module_ottojs.go

/*
*
*    OttoJS Plugin Module
*    Copyright Azareal 2016 - 2019
*
 */
package common

import (
    "errors"

    "github.com/robertkrimen/otto"
)

type OttoPluginLang struct {
    vm      *otto.Otto
    plugins map[string]*otto.Script
    vars    map[string]*otto.Object
}

func init() {
    pluginLangs["ottojs"] = &OttoPluginLang{
        plugins: make(map[string]*otto.Script),
        vars:    make(map[string]*otto.Object),
    }
}

func (js *OttoPluginLang) Init() (err error) {
    js.vm = otto.New()
    js.vars["current_page"], err = js.vm.Object(`var current_page = {}`)
    return err
}

func (js *OttoPluginLang) GetName() string {
    return "ottojs"
}

func (js *OttoPluginLang) GetExts() []string {
    return []string{".js"}
}

func (js *OttoPluginLang) AddPlugin(meta PluginMeta) (plugin *Plugin, err error) {
    script, err := js.vm.Compile("./extend/"+meta.UName+"/"+meta.Main, nil)
    if err != nil {
        return nil, err
    }

    var pluginInit = func(plugin *Plugin) error {
        retValue, err := js.vm.Run(script)
        if err != nil {
            return err
        }
        if retValue.IsString() {
            ret, err := retValue.ToString()
            if err != nil {
                return err
            }
            if ret != "" {
                return errors.New(ret)
            }
        }
        return nil
    }

    plugin = new(Plugin)
    plugin.UName = meta.UName
    plugin.Name = meta.Name
    plugin.Author = meta.Author
    plugin.URL = meta.URL
    plugin.Settings = meta.Settings
    plugin.Tag = meta.Tag
    plugin.Type = "ottojs"
    plugin.Init = pluginInit

    // TODO: Implement plugin life cycle events

    buildPlugin(plugin)

    plugin.Data = script
    return plugin, nil
}

/*func (js *OttoPluginLang) addHook(hook string, plugin string) {
    hooks[hook] = func(data interface{}) interface{} {
        switch d := data.(type) {
        case Page:
            currentPage := js.vars["current_page"]
            currentPage.Set("Title", d.Title)
        case TopicPage:

        case ProfilePage:

        case Reply:

        default:
            log.Print("Not a valid JS datatype")
        }
    }
}*/