define([
     'dojo/_base/array',
     'dojo/_base/lang',
     'dojox/json/schema',
     'qed/lib/async',
     './util/db',
     'qed/model/schema'
],function(array,lang,jsonSchema,async,db,schema){

    async.seq([
        function(){
            console.log("Validating documents for QED:");
            console.log("NOTE: referential integrity is not checked.");
        },
        function(){
            console.log("Getting list of documents.");
            return db.req('get','qed/_all_docs')
            .then(function(docs){
                return array.filter(docs.rows,function(doc){
                    return doc.id.indexOf('_design/') !== 0;
                });
            });
        },
        function(docs){
            console.log("Validating documents.");
            return async.map(docs,function(doc){
                var id = doc.id;
                return db.req('get','qed/'+id)
                .then(function(actualDoc){
                    var result = jsonSchema.validate(actualDoc,schema);
                    console.log("Document '"+id+"' is "+(result.valid ? "valid" : "invalid")+".");
                });
            });
        }
    ]).then(function() {
        console.log("Done!");
    },function(err){
        console.log("Fail!",err.stack);
    });


});