const Unit = require('libflitter/Unit')

/*
 * The Miscellaneous Unit
 * -------------------------------------------------------------
 * This is a Unit file where you should make any modifications that
 * your application may need such as custom Express add-ons. Changes
 * here are loaded after the core Flitter units, but before the other
 * units (secondary, custom, error, and App), so they are available to
 * other units in the stack.
 */
class MiscUnit extends Unit {

    /*
     * Initializes the unit class.
     * This is called OUTSIDE of a Flitter context,
     * so no other contexts are available. Modifications here
     * take place before any part of Flitter is loaded or available.
     */
    constructor(){
        super()


    }

    /*
     * Initialize the actual Unit.
     * This is where most of the changes will go.
     * This is provided an instance of the Express app
     * so any custom changes can be made. The core Flitter
     * contexts are available here, so things like config(),
     * model(), etc. work.
     */
    async go(app, context){

        // do stuff here
        global.devbug = {
            version: '0.6.0',
            code: {
                node: `require("devbugjs")
dbsetup({
\tserver: "https://CHANGEME:8000/", // DevBug Server URL
\tproject: "CHANGEME", // Project API Key
})`,
                api: `// Send a multipart/form-data POST request to:
// http://#{_flitter.config('server.url')}/api/v1/out/<project api key>

// The form should have a single field with the name "data".
// This field should contain a valid JSON string with the following structure:
{
    "brief": "Some preview text to be displayed. Whatever you want.",
    "data": {
        // the output data (key-pairs) goes here:
        "some name": "some data",
    },
}`,
                php: `<?php
// ===========================================================
// DEVBUG INLINE DEBUGGING HELPER - FOR USE WITH DEVBUG SERVER
// TODO: REMOVE BEFORE COMMITTING
$dev_outs = [];
function out($key, $what, $group = null){
        global $dev_outs;
        if ( $group ){
                if ( !array_key_exists($group, $dev_outs) ){
                        $dev_outs[$group] = [ $key => $what ];
                }
                else {
                        $dev_outs[$group][$key] = $what;
                }
        }
        else {
                $dev_outs[$key] = $what;
        }
}
function breakpoint($continue = false, $name = null){
        global $dev_outs;
        $devbug = "http://localhost:8000/";
        $project_api_key = "CHANGEME";
        $bt = debug_backtrace();
        $caller = array_shift($bt);

        // Send to devbug server
        $ch = curl_init();
        $url = $devbug.'api/v1/out/'.$project_api_key;
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, [
          'data' => json_encode([
            'brief' => ($name ? $name : 'Breakpoint').': '.$caller['file'].': '.$caller['line'],
            'data' => $dev_outs,
          ])
        ]);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        $odata = curl_exec($ch);

        if ( !$continue ) { exit(); }
}
// ===========================================================`,
            },
            permission: {
                project: {
                    async edit(project, target_user){
                        if ( project.user_id === target_user.uuid ) return true
                        else if ( project.edit_user_ids.includes(target_user.uuid) ) return true
                        else return false
                    },
                    sync_edit(project, target_user){
                        if ( project.user_id === target_user.uuid ) return true
                        else if ( project.edit_user_ids.includes(target_user.uuid) ) return true
                        else return false
                    },
                    async view(project, target_user){
                        if ( project.user_id === target_user.uuid ) return true
                        else if ( project.shared_user_ids.includes(target_user.uuid) ) return true
                        else if ( project.edit_user_ids.includes(target_user.uuid) ) return true
                        else return false
                    },
                    async owns(project, target_user){
                        return (project.user_id === target_user.uuid)
                    }
                },
                snippet: {
                    async edit(snippet, target_user){
                        const project = await _flitter.model('v1:Project').findById(snippet.project_id)
                        if ( snippet.user_id === target_user.uuid ) return true
                        else if ( snippet.edit_user_ids.includes(target_user.uuid) ) return true
                        else if ( await devbug.permission.project.edit(project, target_user) ) return true
                        else return false
                    },
                    async view(snippet, target_user){
                        const project = await _flitter.model('v1:Project').findById(snippet.project_id)
                        if ( this.edit(snippet, target_user) ) return true
                        else if ( snippet.shared_user_ids.includes(target_user.uuid) ) return true
                        else if ( await devbug.permission.project.view(project, target_user) ) return true
                        else return false
                    },
                    async owns(snippet, target_user){
                        const project = await _flitter.model('v1:Project').findById(snippet.project_id)
                        if ( snippet.user_id === target_user.uuid ) return true
                        else if ( await devbug.permission.project.owns(project, target_user) ) return true
                        else return false
                    }
                }
            },
        }
    }

    name(){
        return "misc"
    }

}

module.exports = exports = MiscUnit