import { IBuilder } from ".";
import { Env } from "../models/Env";

export class EnvBuilder implements IBuilder<Env> {

    readonly ident = "  ";
    readonly newLine = "\r\n";
    private stack: string[] = [];
    private _src!: Env;


    get src(): Env {
        return this._src;
    }
    set src(v: Env) {
        this._src = v;
    }

    /**
     * Builds XML for a single environment (static method for direct use)
     */
    public buildEnv(env: Env): string {
        this.src = env;
        return this.build();
    }

    build(): string {
        return this
            .open()
            .params()
            .close()
            .toString();
    }

    private params(): this {
        const tag = `<parameter name="{name}" value="{val}" />`;
        for (const p of this.src.params) {
            this.stack.push(this.ident);
            this.stack.push(tag
                .replace("{name}", p.name ?? "!ERR!")
                .replace("{val}", p.sanitize(p.value) ?? "!ERR!")
            );
            this.stack.push(this.newLine);
        }

        return this;
    }

    private open(): EnvBuilder {
        const tag = `<environment name="${this.src.name}">`;
        this.stack.push(tag);
        this.stack.push(this.newLine);
        return this;
    }
    private close(): EnvBuilder {
        const tag = `</environment>`;
        this.stack.push(tag);
        return this;
    }

    toString(): string {
        let res = "";

        while (this.stack.length > 0) {
            res = this.stack.pop() + res;
        }

        return res;
    }
}