var env = require('../env')
  , upgradeCouch = require('../config/upgrade-couchdb')
  , cryptoken = require('../util/crypto-token')
  , HTTPResult = require('../util/http-result')
  , _ = require('underscore')
  ;

var qcodeMap = {
    PT1GF: 'ST1GF'
};

var subcodeMap = {
    SAPY: { // really called, team psychological safety
        10: '1',
        11: '2',
        12: '3',
        13: '4',
        14: '5',
        15: '6',
        16: '7'
    },
    SAPI2: {
        1: ''
    },
    PT1GF: {
        10: '1',
        11: '2',
        12: '3',
        13: '4',
        14: '5',
        15: '10',
        16: '11'
    },
    SVAG12: {
        0: ''
    },
    SVTCQ: {
        10: '1',
        11: '2',
        12: '3',
        13: '4',
        14: '5',
        15: '6',
        16: '7',
        17: '8',
        18: '9',
        19: '10',
        110: '11',
        111: '12',
        112: '13',
        113: '14',
        114: '15',
        115: '16'
    },
    SAGE: {
        10: '1',
        11: '2',
        12: '3',
        13: '4',
        14: '5',
        15: '6',
        16: '7',
        17: '8',
        18: '9',
        19: '10',
        110: '11',
        111: '12',
        112: '13',
        113: '14',
        114: '15',
        115: '16',
        116: '17',
        117: '18'
    },
    SAPI1: {
        10: 'a',
        11: 'b',
        12: 'c',
        13: 'd'
    },
    SVAG2: {
        0: ''
    },
    GROUPID: {
        0: ''
    },
    RESPONDENTID: {
        0: ''
    }
};

var fullcodeMap = {};
_.each(subcodeMap, function(subcodes,oldCode){
    var newCode = oldCode in qcodeMap ? qcodeMap[oldCode] : oldCode;
    _.each(subcodes,function(newSubcode,oldSubcode){
        fullcodeMap[oldCode+oldSubcode] = newCode+newSubcode;
    });
});

function rewriteQuestion(question) {
    if ( question.code in subcodeMap ) {
        rewriteContent(question.content,subcodeMap[question.code]);
    }
    if ( question.code in qcodeMap ) {
        question.code = qcodeMap[question.code];
    }
}

function rewriteContent(obj,map) {
    if ( _.isObject(obj) ) {
        if ( 'subcode' in obj && obj.subcode in map ) {
            obj.subcode = map[obj.subcode];
        }
        _.each(obj,function(item){
            rewriteContent(item,map);
        });
    }
}

function rewriteAnswers(answers) {
    _.each(answers,function(answer,code){
        if ( code in fullcodeMap ) {
            delete answers[code];
            answers[fullcodeMap[code]] = answer;
        }
    });
}

function rewriteDoc(doc) {
    switch(doc.type) {
    case 'SurveyRun':
        _.each(doc.survey.questions,rewriteQuestion);
        return doc;
    case 'Survey':
        _.each(doc.questions,rewriteQuestion);
        return doc;
    case 'Question':
        rewriteQuestion(doc);
        return doc;
    case 'Response':
        rewriteAnswers(doc.answers);
        return doc;
    default:
        return HTTPResult.fail();
    }
}

upgradeCouch(env.couchServerURL,env.dbName,rewriteDoc)
.then(function(res){
    console.log("done",res);
}, function(err){
    console.error("fail",err);
});