define([
     'dojo/_base/json',
     'dojo/_base/lang',
     'dojox/lang/functional',
     'qed/lib/async',
     './util/db',
     './data/design-docs'
],function(json,lang,func,async,db,docs){

    function serializeFunctions(value) {
        if ( value === null ) {
            return null;
        } else if ( lang.isArray(value) ) {
            return value;
        } else if ( lang.isFunction(value) ) {
            return value.toString();
        } else if ( lang.isObject(value) ) {
            return func.mapIn(value,serializeFunctions);
        } else {
            return value;
        }
    }

    async.seq([
        function(){
            console.log("Configuring CouchDB for QED:");
        },
        function(){
            console.log("Checking CouchDB version");
            return db.req('get','')
            .then(function(res){
                if (res.version !== "1.2.0" ) {
                    console.log("Found "+res.version+", only tested with CouchDB 1.2.0")
                } else {
                    console.log("CouchDB 1.2.0 found");
                }
            });
        },function(){
            console.log("Checking database 'qed'");
            return db.req('get','qed')
            .then(function(res){
                if (res.error) {
                    console.log("Creating database 'qed'");
                    return db.req('put','/qed');
                } else {
                    console.log("Database 'qed' found.");
                }
            },function(res){
                console.log("Creating database 'qed'");
                return db.req('put','/qed');
            });
        },function(){
            return serializeFunctions(docs);
        },function(docs){
            console.log("Putting documents in database.");
            return async.forEach(func.keys(docs),function(docUrl){
                var doc = docs[docUrl];
                var configAction = doc.__configAction;
                delete doc.__configAction;
                switch (configAction) {
                    case "ignore":
                        console.log(docUrl+" ignored.");
                    case "update":
                        console.log(docUrl+" updating.");
                        return db.req('get',docUrl)
                        .then(function(oldDoc){
                            lang.mixin(oldDoc,doc);
                            return db.req('put',docUrl,oldDoc);
                        },function(){
                            return db.req('put',docUrl,doc);
                        });
                    case "replace":
                    default:
                        console.log(docUrl+" replacing.");
                        return db.req('get',docUrl)
                        .then(function(oldDoc){
                            doc['_rev'] = oldDoc['_rev'];
                            return db.req('put',docUrl,doc);
                        },function(){
                            return db.req('put',docUrl,doc);
                        });
                }
            });
        },function(){
            console.log("Done!");
        }
    ]);


});