const { writeFileSync, existsSync } = require("fs");
const config = require("../config");

class File {

    createdService(ServiceName, ServiceMethods) {
        console.log("ServiceName: ", ServiceName);
        console.log("ServiceMethods: ", ServiceMethods);
        let fullPath = `${config.outPutServicePath}/${ServiceName}.service.ts`
        // if (!existsSync(fullPath)) {
            let mArray = Array.from(ServiceMethods, ([name, value]) => ({ name, value }));
            writeFileSync(fullPath, this.stripIndent`
                // @ts-nocheck
                import { GET, Mapper, POST, PUT, DELETE } from "@ann/Http.annotation";
                import { property, defaultValue, deserialize } from "@ann/JsonToClass";

                // 建议用工具json-class-desktop生成这个类 类型
                export class ResponseType {
                    @property("id")
                    user_id!: number;
                }

                export class ${ServiceName}Service {
                    ${mArray.map(v => {
                      return `
                        @GET()
                        @Mapper(ResponseType)
                        public async ${v.name} (params: object): Promise<ResponseType[]> {}
                      `
                    }).toString().replaceAll(",", "")
                }
                }
            `)
        // }
    }


    stripIndent(template, ...expressions) {
        let result = template.reduce((prev, next, i) => {
            let expression = expressions[i - 1];
            if ( Array.isArray(expression)) {
                expression = expression.join('');
            }
            return prev + expression + next;
        });

        const match = result.match(/^[^\S\n]*(?=\S)/gm);
        const indent = match && Math.min(...match.map(el => el.length));

        if (indent) {
            const regexp = new RegExp(`^.{${indent}}`, 'gm');
            result = result.replace(regexp, '');
        }

        result = result.replace(/^[^\S\n]+/gm, ' ');
        result = result.trim();
        return result;
    }
}
        
module.exports = new File