var util = require('util');
var v8type = require('v8type');

var tag_api = function(){};


tag_api.prototype.all_tags = function(source, callback){
    if(arguments.length < 2 && v8type.is(arguments[0], v8type.FUNCTION)){
	callback = arguments[0];
	source = undefined;
    }

    params = {
	query: {
	    source: source
	}
    };
    this.request('GET', '/tags/hosts', params, callback);
};

tag_api.prototype.host_tags = function(host, source, callback){
    if(arguments.length < 3 && v8type.is(arguments[1], v8type.FUNCTION)){
	callback = arguments[1];
	source = undefined;
    }

    params = {
	query: {
	    source: source,
	}
    };
    this.request('GET', util.format('/tags/hosts/%s', host), params, callback);
};

tag_api.prototype.host_tags_by_source = function(host, source, callback){
    if(arguments.length < 3 && v8type.is(arguments[1], v8type.FUNCTION)){
	callback = arguments[1];
	source = undefined;
    }

    params = {
	query: {
	    source: source,
	    by_source: true,
	}
    };
    this.request('GET', util.format('/tags/hosts/%s', host), params, callback);
};

tag_api.prototype.add_tags = function(host, tags, source, callback){
    if(!v8type.is(tags, v8type.ARRAY)){
	throw new Error('`tags` parameter must be an array');
    }

    if(arguments.length < 4 && v8type.is(arguments[2], v8type.FUNCTION)){
	callback = arguments[2];
	source = undefined;
    }

    params = {
	query: {
	    source: source,
	},
	body: {
	    tags: tags,
	}
    };

    this.request('POST', util.format('/tags/hosts/%s', host), params, callback);
};

tag_api.prototype.update_tags = function(host, tags, source, callback){
    if(!v8type.is(tags, v8type.ARRAY)){
	throw new Error('`tags` parameter must be an array');
    }

    if(arguments.length < 4 && v8type.is(arguments[2], v8type.FUNCTION)){
	callback = arguments[2];
	source = undefined;
    }

    params = {
	query: {
	    source: source,
	},
	body: {
	    tags: tags,
	}
    };

    this.request('PUT', util.format('/tags/hosts/%s', host), params, callback);
};

tag_api.prototype.detach_tags = function(host, source, callback){
    if(arguments.length < 3 && v8type.is(arguments[1], v8type.FUNCTION)){
	callback = arguments[1];
	source = undefined;
    }

    params = {
	query: {
	    source: source,
	},
    };

    this.request('DELETE', util.format('/tags/hosts/%s', host), params, callback);
};

return module.exports = tag_api;