/**
 * @author Martin Karkowski
 * @email m.karkowski@zema.de
 * @create date 2020-02-20 19:46:19
 * @modify date 2020-08-06 08:03:09
 * @desc [description]
 */

import * as handlebars from 'handlebars';
import { IParsedLogic } from '../types/interface';
// declare const handlebars;
import { IParser } from './default.parser';


export class SiemensParser implements IParser {


    mainLoop(context: IParsedLogic): string {
        const templates = {
            ifHeaderTemplate: `{{#if isFirst}}IF{{/if}}{{#unless isFirst}}ELSIF{{/unless}}{{> testPrePlaces}}{{> testPostPlaces}}{{> testGuard}} THEN`,
            testPrePlaces: `{{#each inputs}} ("{{placeTokenVar}}"{{#if minTokens}} - "{{minTokens}}"{{/if}}) >= "{{tokensToRemove}}" AND{{/each}}`,
            testPostPlaces: `{{#each testOutputs}} ("{{placeTokenVar}}" + "{{tokensToAdd}}") <= {{maxTokens}}" AND {{/each}}`,
            testGuard: ` {{guard.external}}`,
            removeTokens: `{{#each inputs}}"{{placeTokenVar}}" := "{{placeTokenVar}}" - "{{tokensToRemove}}";{{/each}}`,
            addTokens: `{{#each outputs}}"{{placeTokenVar}}" := "{{placeTokenVar}}" + "{{tokensToAdd}}";{{/each}}`
        }

        for (const partial in templates) {
            handlebars.registerPartial(partial, templates[partial]);
        }

        const functions: { [index: string]: (context: any) => string } = {
            'plc.set': (context) => {
                console.log(context);
                return ''
            }
        }

        // handlebars.registerHelper(require('handlebars-helpers/lib/array.js'))

        handlebars.registerHelper('getFunctionCode', (context, name, paramers, dynParams) => {
            console.log('FUNC', context, name, paramers, dynParams)
        })

        const mainTemplate = `` +
            `
ORGANIZATION_BLOCK "Main"
TITLE = "Main Program Sweep (Cycle)"
{ S7_Optimized_Access := 'TRUE' }
VERSION : 0.1

BEGIN

{{#each transitions}}
// Test Transtion "{{{label}}}"  
{{> ifHeaderTemplate}}   
{{#if inputs}}

    // Removing Tokens from Pre-Places.
    {{> removeTokens}}
{{/if}}
{{#if outputs}}

    // Adding Tokens to the Post-Places.
    {{> addTokens}}
{{/if}}
{{#if funcName}}

    // Execute the desired Function
    {{#getFunctionCode funcName params dynamicParameters}}{{/getFunctionCode}}
{{/if}}
{{#if isLast}}
END_IF;
{{/if}}
{{/each}}

END_ORGANIZATION_BLOCK
        `

        // handlebars.registerHelper("joinList", helpers_1.joinListHelper);

        const render = handlebars.compile(mainTemplate);
        return '';
    }

    variableDefinition(context: IParsedLogic): string {
        const template = `` +
            `
DATA_BLOCK "VARS_DB"
{ S7_Optimized_Access := 'FALSE' }
VERSION : 0.1
NON_RETAIN
	VAR 
		{{#each variables}}
        {{name}} : {{type}};
		{{/each}}
	END_VAR
BEGIN
   	{{#some variables "v=>(v.hasValue)"}}
	{{#joinList this "\n" "v=>(v.hasValue)"}}
	{{name}} := {{value}};
	{{/joinList}}
	{{/some}}
END_DATA_BLOCK
        `

        const render = handlebars.compile(template);
        return render(context);
    }

    instanceCreation(context: IParsedLogic): string {
        throw new Error("Method not implemented.");
    }
}