const Group = require("../models/group");
const System = require("../models/system");
const mongoose = require("mongoose");

//router.get('/system/:shortName/group/:groupId?', isLoggedIn, function(req, res) {

exports.getGroups = function(req, res, next) {
  process.nextTick(function() {
    System.findOne(
      {
        shortName: req.params.shortName.toLowerCase()
      },
      function(err, system) {
        if (err) {
          console.error(err);
          res.json({ success: false, message: err });
          return;
        }
        if (!system) {
          console.error(err);
          res.json({
            success: false,
            message: "That Short Name does not exist."
          });
          return;
        }
        if (!system.userId.equals(req.user._id)) {
          res.json({
            success: false,
            message: "You are not the user associated with this system."
          });
          return;
        }

        if (req.params.groupId) {
          var groupId = req.params.groupId.toLowerCase();

          Group.findOne(
            {
              _id: new mongoose.Types.ObjectId(groupId),
              shortName: req.params.shortName.toLowerCase()
            },
            { sort: { position: -1 } },
            function(err, group) {
              if (err) {
                res.json({
                  success: false,
                  message: err
                });
                return;
              } else {
                res.json({
                  success: true,
                  group: group
                });
                return;
              }
            }
          );
        } else {
          Group.find(
            {
              shortName: req.params.shortName.toLowerCase()
            }).sort("position").exec(
            function(err, groups) {
              if (err) {
                res.json({
                  success: false,
                  message: err
                });
                return;
              } else {
                res.json({
                  success: true,
                  groups: groups
                });
                return;
              }
            }
          );
        }
      }
    );
  });
};

exports.deleteGroup = function(req, res, next) {
//router.get('/system/:shortName/remove_group/:groupId', isLoggedIn, function(req, res) {
    System.findOne({
        'shortName': req.params.shortName.toLowerCase()
    }, function(err, system) {
      if (err) {
        console.error(err);
        res.json({ success: false, message: err });
        return;
      }
      if (!system) {
        console.error(err);
        res.json({
          success: false,
          message: "That Short Name does not exist."
        });
        return;
      }
      if (!system.userId.equals(req.user._id)) {
        res.json({
          success: false,
          message: "You are not the user associated with this system."
        });
        return;
      }
            Group.findOneAndRemove({
                shortName: req.params.shortName.toLowerCase(),
                '_id': new mongoose.Types.ObjectId(req.params.groupId)
            }, function(err) {

                  if (err) {
                    res.json({
                      success: false,
                      message: err
                    });
                    return;
                } else {
                  res.json({
                    success: true
                  });
                  return;
                }
                // removed!
            });

    });
};

exports.reorderGroups = function(req, res, next) {
  //router.post('/system/:shortName/group_order', isLoggedIn, function(req, res) {
  process.nextTick(function() {
    System.findOne(
      {
        shortName: req.params.shortName.toLowerCase()
      },
      function(err, system) {
        if (err) {
          console.error(err);
          res.json({ success: false, message: err });
          return;
        }
        if (!system) {
          console.error(err);
          res.json({
            success: false,
            message: "That Short Name does not exist."
          });
          return;
        }
        if (!system.userId.equals(req.user._id)) {
          res.json({
            success: false,
            message: "You are not the user associated with this system."
          });
          return;
        }

        var groupOrder = JSON.parse(req.body.groupOrder);
        for (var i = 0; i < groupOrder.length; i++) {

            console.log("in group: " + groupOrder[i] + " position: " + i);
          Group.findOneAndUpdate(
            {
              _id: new mongoose.Types.ObjectId(groupOrder[i]),
              shortName: req.params.shortName.toLowerCase()
            },
            {
              position: i
            },
            {
              new: true,
              upsert: false
            },
            function(err, group) {
              console.log("Save group: " + group._id + " position: " + group.position);
              if (err) {
                res.json({
                  success: false,
                  message: err
                });

                console.log(
                  "Error: Group Order - " +
                    err +
                    " Shortname: " +
                    req.params.shortName.toLowerCase()
                );
                return;
              }
            }
          );
        }
        res.json({
          success: true
        });
      }
    );
  });
};

exports.upsertGroup = function(req, res, next) {
  //router.post('/system/:shortName/group/:groupId?', isLoggedIn, function(req, res) {
  process.nextTick(function() {
    System.findOne(
      {
        shortName: req.params.shortName.toLowerCase()
      },
      function(err, system) {
        if (err) {
          console.error(err);
          res.json({ success: false, message: err });
          return;
        }
        if (!system) {
          console.error(err);
          res.json({
            success: false,
            message: "That Short Name does not exist."
          });
          return;
        }
        if (!system.userId.equals(req.user._id)) {
          res.json({
            success: false,
            message: "You are not the user associated with this system."
          });
          return;
        }
        var message = "";
        var groupName = req.body.groupName.replace(/[^\w\s]/g, "");
        var talkgroups = JSON.parse(req.body.talkgroups);

        if (!talkgroups.length || !Array.isArray(talkgroups)) {
          message = "Talkgroups need to be selected, group can not be empty ";
        }
        if (!groupName.length) {
          message = message + "Group Name is required";
        }

        if (message.length) {
          res.json({
            success: false,
            message: message
          });
          return;
        }
        // if we got here, that means that everything is good for updating/inserting

        var groupId = req.params.groupId;

        Group.findOneAndUpdate(
          {
            _id: new mongoose.Types.ObjectId(groupId),
            shortName: req.params.shortName.toLowerCase()
          },
          {
            groupName: groupName,
            talkgroups: talkgroups
          },
          {
            new: true,
            upsert: true
          },
          function(err, group) {
            if (err) {
              res.json({
                success: false,
                message: err
              });
              return;
            } else {
              res.json({
                success: true,
                group: group
              });
              return;
            }
          }
        );
      }
    );
  });
};