import { Plugin, socketioRPC } from "frontblock-generic/Plugin";
import { GitUpdater, RepoFolderStatus } from "./GitUpdater";
import { FrontblockCherryPicker } from "git-cherrypicker";
import * as Logger from 'log4js'
Logger.configure({
    appenders: 
    {
    "admin/updatemanager": { type: 'stdout' },
    //app: { type: 'file', filename: 'application.log' }
    },
    categories: 
    {
    default: { appenders: [ 'admin/updatemanager' ], level: 'debug' }
    }
})
const logger = Logger.getLogger("admin/updatemanager") 


export class UpdateManager implements Plugin{
    name: string = "UpdateManager"
    private loadedPlugins:{[name in string]:Plugin} = {}
    private dashboardUpdater:GitUpdater
    private adminUpdater:GitUpdater
    private pluginUpdaters:{[name in string]:GitUpdater} = {}

    getDefaultConfig(): void {
        return
    }

    exportRPCs(): socketioRPC[] {
        return [{
            name: 'installPlugin',
            rpc: async (name:string) => {return await this.installPlugin(name)},
            type: 'call',
            visibility: 'private'
        },{
            name: 'startPlugin',
            rpc: async (name:string) => {return await this.startPlugin(name)},
            type: 'call',
            visibility: 'private'
        },{
            name: 'updatePlugin',
            rpc: async (name) => {return await this.updatePlugin(name)},
            type: 'call',
            visibility: 'private'
        },{
            name: 'setPluginVersion',
            rpc: async (name, tag) => {return await this.setPluginVersion(name, tag)},
            type: 'call',
            visibility: 'private'
        },{
            name: 'updateDashboard',
            rpc: async () => {return await this.updateDashboard()},
            type: 'call',
            visibility: 'private'
        },{
            name: 'getLoadedPluginNames',
            rpc: async () => {return await this.getLoadedPluginNames()},
            type: 'call',
            visibility: 'private'
        }]
    }

    async updateAdmin(force:boolean = false){
        this.adminUpdater = new GitUpdater("./dist")
        let status = await this.adminUpdater.getStatus()
        if(force || !status.remote || !status.remote.includes("fb-dist/admin") || !status.exists || status.empty || !status.currentTag){
            logger.warn("Cloning fb-dist/admin into ./dist ..."+(force?" USING FORCE!":""))
            status = await this.adminUpdater.cloneRepo("https://gitea.frontblock.me/fb-dist/admin.git", force)
        }
        return status
    }

    async updateFrontblockLib(){
        logger.warn("Picking FrontblockLib...")
        await (new FrontblockCherryPicker("fb-dist/admin", "master", "FrontblockLib.js")).write("./static/FrontblockLib.js")
    }

    async updateDashboard(force:boolean = false):Promise<RepoFolderStatus>{
        this.dashboardUpdater = new GitUpdater("./static")
        let status = await this.dashboardUpdater.getStatus()
        if(force || !status.exists || status.empty || !status.currentTag){
            logger.warn("Cloning fb-dist/dashboard into ./static ..."+(force?" USING FORCE!":""))
            status = await this.dashboardUpdater.cloneRepo("https://gitea.frontblock.me/fb-dist/dashboard.git", force)
        }
        return status
    }

    async installPlugin(name: string, force:boolean = false):Promise<RepoFolderStatus>{
        logger.warn("Cloning fb-dist/"+name+".git into ./plugins/"+name+" ..."+(force?" USING FORCE!":""))
        this.pluginUpdaters[name] = new GitUpdater("./plugins/"+name)
        const status = await this.pluginUpdaters[name].cloneRepo("https://gitea.frontblock.me/fb-dist/"+name.toLowerCase()+".git", force)
        return status
    }

    async startPlugin(name:string):Promise<boolean>{
        if(!this.pluginUpdaters[name]) return false
        const status = await this.pluginUpdaters[name].getStatus()
        if(!status.exists || status.empty || !status.tags || status.tags.length === 0){
            logger.error("Bad repo status", name, status)
            return false
        }

        if(this.loadedPlugins[name]){
            logger.error("Plugin", name, "is already started")
            return false
        }


        let str = "../plugins/"+name+"/Plugin"
        const pluginClass = await import(str)
        const pluginObj = new pluginClass.default()
        await pluginObj.start()
        this.loadedPlugins[name] = pluginObj
        return true
    }

    async updatePlugin(name:string):Promise<boolean>{
        if(!this.pluginUpdaters[name]) return false
        const status = await this.pluginUpdaters[name].getStatus()
        if(!status.exists || status.empty || !status.tags || status.tags.length === 0){
            logger.error("Bad repo status", name, status)
            return false
        }
        if(status.currentTag == status.latestTag){
            logger.warn(name, "already at latest tag")
            return false
        }

        if(this.loadedPlugins[name]){
            logger.error("Plugin", name, "is running. Stop it first")
            return false
        }

        this.pluginUpdaters[name].checkoutTag(status.latestTag!)
        return true
    }

    async setPluginVersion(pluginName:string, tag:string):Promise<RepoFolderStatus>{
        const status = await this.pluginUpdaters[pluginName].getStatus()
        if(!status.exists || !status.tags || status.tags.length === 0 || !status.tags.includes(tag)){
            logger.error("Bad repo status", pluginName, status)
            return status
        }

        return await this.pluginUpdaters[pluginName].checkoutTag(tag)
    }

    getLoadedPlugins():Plugin[]{
        return Object.values(this.loadedPlugins)
    }

    getLoadedPluginNames():string[]{
        return Object.keys(this.loadedPlugins)
    }

    start(): void | Promise<void> {
        throw new Error("Method not implemented (on purpose)");
    }

    stop(): void | Promise<void> {
        throw new Error("Method not implemented (on purpose)");
    }


}