# All files / server-old/reply reply.js

100% Statements 94/94
91.43% Branches 32/35
100% Functions 32/32
100% Lines 90/90

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     const path = require('path');
    const fs = require('mz/fs');

    const Reply = function (name, ...args) {
      this.stack = [];
      this[name](...args);
      return this;
    };

    Reply.prototype.cookie = function (...args) {
      this.stack.push(ctx => {
        ctx.res.cookie(...args);
      });
      return this;
    };

    Reply.prototype.download = function (...args) {

      // Guard clauses
      if (args.length < 1) {
        throw new Error('download() expects a path as the first argument');
      }

      if (args.length < 2) {
        throw new Error('download() expects a filename as the second argument');
      }

      if (args.length > 2) {
        throw new Error('download() only expects two arguments, path and filename. The rest of them will be ignored');
      }

      let [file, opts] = args;
      if (!path.isAbsolute(file)) {
        file = path.resolve(process.cwd(), file);
      }

      this.stack.push(async ctx => {
        if (!await fs.exists(file)) {
          throw new Error(`The file "${file}" does not exist. Make sure that you set an absolute path or a relative path to the root of your project`);
        }
        return new Promise((resolve, reject) => {
          ctx.res.download(file, opts, err => err ? reject(err) : resolve());
        });
      });

      return this;
    };

    Reply.prototype.end = function () {
      this.stack.push(ctx => {
        ctx.res.end();
      });
      return this;
    };

    Reply.prototype.file = function (...args) {

      // Guard clauses
      if (args.length < 1) {
        throw new Error('file() expects a path as the first argument');
      }

      if (args.length > 2) {
        throw new Error(`file() only expects two arguments, the path and options, but ${args.length} were provided.`);
      }

      let [file, opts = {}] = args;
      if (!path.isAbsolute(file)) {
        file = path.resolve(process.cwd(), file);
      }

      this.stack.push(async ctx => {
        if (!await fs.exists(file)) {
          throw new Error(`The file "${file}" does not exist. Make sure that you set an absolute path or a relative path to the root of your project`);
        }
        return new Promise((resolve, reject) => {
          ctx.res.sendFile(file, opts, err => err ? reject(err) : resolve());
        });
      });

      return this;
    };

    Reply.prototype.header = function (...args) {
      this.stack.push(ctx => {
        ctx.res.header(...args);
      });
      return this;
    };

    Reply.prototype.json = function (...args) {
      this.stack.push(ctx => {
        ctx.res.json(...args);
      });
      return this;
    };

    Reply.prototype.jsonp = function (...args) {
      this.stack.push(ctx => {
        ctx.res.jsonp(...args);
      });
      return this;
    };

    Reply.prototype.redirect = function (...args) {
      this.stack.push(ctx => {
        ctx.res.redirect(...args);
      });
      return this;
    };

    Reply.prototype.render = function (...args) {

      // Guard clauses
      if (args.length < 1) {
        throw new Error('file() expects a path');
      }

      if (args.length > 2) {
        throw new Error('file() expects a path and options but nothing else');
      }

      let [file, opts = {}] = args;

      this.stack.push(ctx => new Promise((resolve, reject) => {
        // Note: if callback is provided, it does not send() automatically
        const cb = (err, html) => err ? reject(err) : resolve(ctx.res.send(html));
        ctx.res.render(file, opts, cb);
      }));
      return this;
    };

    Reply.prototype.send = function (...args) {

      // If we are trying to send the context
      if (args[0] && args[0].close && args[0].close instanceof Function) {
        throw new Error('Never send the context, request or response as those are a security risk');
      }

      this.stack.push(ctx => {
        ctx.res.send(...args);
      });
      return this;
    };

    Reply.prototype.status = function (...args) {
      this.stack.push(ctx => {
        // In case there is no response, it'll respond with the status
        ctx.res.explicitStatus = true;
        ctx.res.status(...args);
      });
      return this;
    };

    Reply.prototype.type = function (...args) {
      this.stack.push(ctx => {
        ctx.res.type(...args);
      });
      return this;
    };

    Reply.prototype.exec = async function (ctx) {
      for (let cb of this.stack) {
        await cb(ctx);
      }
      this.stack = [];
    };

    // This will make that the first time a function is called it starts a new stack
    module.exports = Reply;