var express   = require('express');
var router    = express.Router();
var fs        = require('fs');
var dbSermons = require('../../database/sermons');

var storage = process.env['HOME'] + '/webapps/ofbstatic/media/sermons/';
var deletedStorage = process.env['HOME'] + '/webapps/ofbstatic/media/sermons/deleted/';

function removeFile(filepath){
    fs.unlink(filepath,function(err){
        if (err) throw err;
    });
}

function renameFile(tempFilePath, finalFilePath,cb){
    fs.rename(tempFilePath,finalFilePath,function(err){
        cb(err);
    });
}

function filenameFromPath(filepath){
    return filepath.split('\\').pop().split('/').pop();
}

router.get("/search",function(req,res){
    var pageSize = 5;
    var page = 1;
    var search = '';
    if (req.query.pageSize) pageSize = parseInt(req.query.pageSize);
    if (req.query.page) page = parseInt(req.query.page);
    if (req.query.searchTerm) search = req.query.searchTerm;
    dbSermons.searchSermons(pageSize,page,search,function(err,sermons){
        if (err){
            res.status(500).json({"status":500,"message":"Error processing request","error":err});
            return;
        }
        res.status(200).json({"status":200,"sermons":sermons,"page":page,"pageSize":pageSize > sermons.length ? sermons.length : pageSize, "searchTerm":search});
    });
});

router.get("/:id",function(req,res){
    dbSermons.getSermon(req.params.id,function(error,sermon){
        if (error){
            res.status(404).json({"status":404,"message":"Error processing request"});
            return;
        }
        if (sermon == null){
            res.status(404).json({"status":404,"message":"Sermon does not exist"});
            return;
        }
        res.status(200).json({"status":200,"sermon":sermon});
    });
});

router.get("/download/:id",function(req,res){
    var finalStorage = '/home/ofbbutte/webapps/ofbstatic/media/';
    dbSermons.getSermon(req.params.id,function(error,sermon){
        if (error){
            res.status(404).json({"status":404,"message":"Error processing request"});
            return;
        }
        if (sermon == null){
            res.status(404).json({"status":404,"message":"Sermon does not exist"});
            return;
        }
        var file = finalStorage + sermon.file;
        console.log(file);
        if (fs.existsSync(file)){
            res.download(file);
        } else {
            res.status(404).json({"status":404,"message":"Could not find the file associated with this sermon"});
        }
        
    });
});

router.get("/page/:page",function(req,res){
    console.log("page");
    var pageSize = 5;
    if (req.query.pageSize){
        pageSize = parseInt(req.query.pageSize);
    }
    dbSermons.getSermons(pageSize,req.params.page,function(err,sermons){
        if (err){
            res.status(500).json({"status":500,"message":"Error processing request","error":err});
            return;
        }
        res.status(200).json({"status":200,"sermons":sermons,"page":req.params.page,"pageSize":pageSize > sermons.length ? sermons.length : pageSize});
    });
});


router.post("/a/", function(req,res){
    console.log(req.body);
    if (!req.body.date || !req.body.title || !req.body.author || !req.body.description || !req.body.file){
        removeFile(req.body.tmpPath);
        res.status(400).json({"status":400,"message":"date, title, author, file, and description are required fields in the body"});
        return;
    }
    req.body.file = "sermons/" + req.body.file;
    dbSermons.insertSermon(req.body.date,req.body.title,req.body.timezoneOffset,req.body.author,req.body.description,req.body.file,function(error,sermon){
        if (error){
            removeFile(req.body.tmpPath);
            res.status(500).json({"status":500,"message":"There was an error inserting the sermon"});
            return;
        }
        if (sermon == null){
            removeFile(req.body.tmpPath);
            res.status(404).json({"status":404,"message":"Sermon does not exist"});
            return;
        }
        /////******************************
        /////Add the sermon to the postgres db for the existing site
        var pg = require("../database/postgres-for-old-db/addSermon");
        pg.addSermon(new Date(),req.body.title,req.body.author,req.body.description,req.body.file,function(error){
            renameFile(req.body.tmpPath,req.body.finalPath,function(err){
                if (err){
                    removeFile(req.body.tmpPath);
                    res.status(500).json({"status":500,"message":"Could not rename the temp file"});
                } else {
                    res.status(201).json({"status":201,"sermon":sermon});
                }
            });            
        });
        
    });
});

router.put("/a/",function(req,res){
    console.log(req.body);
    if (!req.body.id || !req.body.date || !req.body.title || !req.body.author || !req.body.description ){
        res.status(400).json({"status":400,"message":"id, date, title, author, and description are required fields in the body"});
        return;
    }
    dbSermons.updateSermon(req.body.id,req.body.date,req.body.title,req.body.author,req.body.description,function(error,result){
        if (error){
            res.status(500).json({"status":500,"message":"There was an error updating the sermon"});
            return;
        }
        if (result.sermon == null){
            res.status(404).json({"status":404,"message":"Sermon does not exist"});
            return;
        }
        res.status(200).json({"status":200,"changedRows":result.changedRows,"sermon":result.sermon});
    });
});

router.delete("/a/",function(req,res){
    if (!req.body.id){
        res.status(400).json({"status":400,"message":"id of the sermon needs to be supplied to delete"});
        return;
    }
    dbSermons.deleteSermon(req.body.id,function(error,result){
        if (error){
            res.status(500).json({"status":500,"message":"There was an error deleting the sermon"});
            return;
        }
        if (result.affectedRows > 0){
            /////******************************
            /////Add the sermon to the postgres db for the existing site
            var pg = require("../database/postgres-for-old-db/addSermon");
            pg.deleteSermon(result.sermon.file,function(error){
                console.log(error);
                var cPath = storage + filenameFromPath(result.sermon.file);
                var dPath = deletedStorage + filenameFromPath(result.sermon.file);
                renameFile(cPath,dPath,function(error){
                    res.status(200).json({"status":200,"affectedRows":result.affectedRows});
                });           
            });            
        } else {
            res.status(200).json({"status":200,"affectedRows":result.affectedRows});
        }
        
    });
});


module.exports = router;