let request = require("request");
let wget = require("wget");
let fs = require("fs");
let config = require("config");
let hasSpeechBotChannels = require("../helpers.js").hasSpeechBotChannels;
let inPrivate = require("../helpers.js").inPrivate;
let ChannelID = config.get("speechbot").mainchannel;
//debug output "true/false" outputs same error as slack message in console if set to true
//if set to false console will be left blank like normal
//some have more info on file details of error
let FullDebug = "true";
//outputs response from speech, very bulk reply
let ResponseDebug = "false";

exports.commands = [
  "speech" // command that is in this file, every command needs it own export as shown below
];

exports.speech = {
  usage: "<name>",
  description: "gets top claim from spee.ch, coming soon post to spee.ch",
  process: function(bot, msg, suffix) {
    if (!hasSpeechBotChannels(msg) && !inPrivate(msg)) {
      msg.channel.send(
        "Please use <#" + ChannelID + "> or DMs to talk to speech bot."
      );
      return;
    }

    var command = "!speech";
    words = suffix
      .trim()
      .split(" ")
      .filter(function(n) {
        return n !== "";
      });
    var imagename = words[0];

    //check if image name is help, if it is then do help message
    if (imagename == "help") {
      doHelp(bot, msg, suffix);
      return;
    } else {
      //check if imagename is defined if not do error
      if (imagename === undefined) {
        if (FullDebug === "true") {
          var message = "`no name provided`";
          console.log("no name provided");
          msg.channel.send(message);
          doHelp(bot, msg, suffix);
          return;
        } else {
          var message = "`no name provided`";
          msg.channel.send(message);
          doHelp(bot, msg, suffix);
          return;
        }
      }

      //set second word to url
      var filepath = words[1];

      //check if a url is provided if none do help message
      if (filepath === undefined) {
        if (FullDebug === "true") {
          var message =
            "`no url provided, fetching image from:`\n" +
            "https://spee.ch/" +
            imagename;
          console.log("no url provided");
          msg.channel.send(message);
          return;
        } else {
          var message =
            "`no url provided, fetching image from:`\n" +
            "https://spee.ch/" +
            imagename;
          msg.channel.send(message);
          return;
        }
      }

      //prepare url for other uses
      //we will just set filepath to url to be safe
      var url = filepath;
      //parse first 4 letters of url should be http
      var linkvalid = url.slice(0, 4);

      //check of url provided begins with http in not throw error and help message
      if (linkvalid !== "http") {
        if (FullDebug === "true") {
          var message =
            "`error not a valid url, please start with http or https`";
          console.log("invalid url provided: " + filepath);
          msg.channel.send(message);
          return;
        } else {
          var message =
            "`error not a valid url, please start with http or https`";
          msg.channel.send(message);
          return;
        }
      }

      //function to check if url is an image
      var isUriImage = function(uri) {
        //make sure we remove any nasty GET params
        uri = uri.split("?")[0];
        //moving on, split the uri into parts that had dots before them
        var parts = uri.split(".");
        //get the last part ( should be the extension )
        var extension = parts[parts.length - 1];
        //define some image types to test against
        var imageTypes = ["jpg", "jpeg", "tiff", "png", "gif", "bmp"];
        //check if the extension matches anything in the list. if it does set true if not set false
        if (imageTypes.indexOf(extension) !== -1) {
          return true;
        } else {
          return false;
        }
      };

      //check if url is an image if its not throw error and help message
      if (isUriImage(url) === false) {
        if (FullDebug === "true") {
          var message =
            "`error not a valid image url, be sure the link includes a file type`";
          console.log("invalid url provided: " + url);
          msg.channel.send(message);
          return;
        } else {
          var message =
            "`error not a valid image url, be sure the link includes a file type`";
          msg.channel.send(message);
          return;
        }
      }
      //set third word to nsfw, with it being an optional functionality
      var eighteen = words[2];

      //check is NSFW if yes or no sets proper value if none
      if (
        eighteen == "" ||
        eighteen == "none" ||
        eighteen == undefined ||
        eighteen == null ||
        eighteen == "no" ||
        eighteen == "false" ||
        eighteen == false ||
        eighteen == "n"
      ) {
        eighteen = "no";
      } else {
        eighteen = "yes";
      }

      //prepare url for wget
      var source = url;
      //parse the filename to use to save file
      filepath = source.split("/").pop();
      //set proper directory for downloading image
      var outputFile = "speech-uploads/" + filepath;
      //set download directory to current working directory
      var dir = process.cwd();
      //set full path to directory for speech uploading
      var fullpath = dir + "\\speech-uploads\\" + filepath;

      //download url via wget
      var download = wget.download(url, outputFile);
      //check if url is reachable if not throw error
      download.on("error", function(err) {
        if (FullDebug === "true") {
          console.log("error could not reach: " + url + " : " + err);
          var message = "`error url could not be reached`";
          msg.channel.send(message);
          return;
        } else {
          var message = "`error url could not be reached`";
          msg.channel.send(message);
          return;
        }
      });

      download.on("end", output => {
        //if no errors and file ready -> do the request
        output && doSteps(bot, imagename, url, eighteen);
      });
    }

    //send help message
    function doHelp(bot, msg, suffix) {
      msg.channel.send({
        embed: {
          title: "",
          description:
            "**!speech `<Name>`** : *displays top claim on speech* \n\n\n" +
            "**COMING SOON POSTING TO SPEECH** \n\n" +
            "**!speech `<Name> <URL> <NSFW>`** : *Uploads Image URL to Spee.ch* \n" +
            "**NOTE : dont include spaces in name (NSFW is optional true/false, if left blank will defualt to false)** \n" +
            "EXAMPLE : `!speech my-image-name https://url/to/image.png false`",
          color: 7976557,
          author: {
            name: "Speech Bot Help",
            icon_url: "https://i.imgur.com/yWf5USu.png"
          }
        }
      });
    }

    //send post request to speech
    function doSteps(bot, imagename, url, eighteen) {
      request.post(
        //url to send post request
        "https://spee.ch/api/publish",
        //json payload
        {
          json: {
            name: imagename,
            file: fullpath,
            nsfw: eighteen
          }
        },
        //get response from server
        function(error, response, body) {
          //output response if ResponseDebug set to true
          if (ResponseDebug === "true") {
            console.log(response);
            console.log(error);
            console.log(body.success);
            console.log(body.message);
          }

          //check speech response for file path error, if found throw internal error!
          if (body.message === "no files found in request") {
            if (FullDebug === "true") {
              console.log("no file found: " + fullpath);
              var message =
                "`Failed to upload file internally!!`\n please contact <@244245498746241025> or another moderator if the issue persists";
              msg.channel.send(message);
              return;
            } else {
              var message =
                "`Failed to upload file internally!!`\n please contact <@244245498746241025> or another moderator if the issue persists";
              msg.channel.send(message);
              return;
            }
          }

          //check speech response for filename error, if found throw internal error!
          if (body.message === "no name field found in request") {
            if (FullDebug === "true") {
              console.log("no name field found: " + imagename);
              var message =
                "`Failed to upload file internally!!`\n please contact <@244245498746241025> or another moderator if the issue persists";
              msg.channel.send(message);
              return;
            } else {
              var message =
                "`Failed to upload file internally!!`\n please contact <@244245498746241025> or another moderator if the issue persists";
              msg.channel.send(message);
              return;
            }
          }

          //if no errors post this message
          var message =
            'uploading... \n "name":"' +
            imagename +
            '",\n "URL": "' +
            url +
            '",\n "nsfw":"' +
            eighteen +
            '"\n to spee.ch';
          console.log(
            'uploading... \n "name":"' +
              imagename +
              '",\n "file name": "' +
              filepath +
              '",\n "url":"' +
              url +
              '"\n "path":"' +
              fullpath +
              '"\n "nsfw": "' +
              eighteen +
              '"'
          );
          msg.channel.send(message);
        }
      );
    }
  }
};