;var ShaderAPI = {}
ShaderAPI.limit = 24

// info - fetch a single shader
//   id: shader id
ShaderAPI.info = function(id, cb){
  ShaderAPI.fetch({
    f: "info",
    id: id
  }, cb)
}

// all - fetch all shaders
ShaderAPI.all = function(cb){
  ShaderAPI.fetch({
    f: "all"
  }, cb)
}

// range - fetch a pageful of results
//   limit: number of shaders to fetch
//   offset: number of results to skip
ShaderAPI.range = function(limit, offset, cb){
  ShaderAPI.fetch({
    f: "range",
    limit: limit || ShaderAPI.limit,
    last: offset
  }, cb)
}

// latest - get the latest N shaders
//   limit: number of shaders to fetch
ShaderAPI.latest = function(limit, cb){
  ShaderAPI.fetch({
    f: "range",
    limit: limit || ShaderAPI.limit
  }, cb)
}

// page - get a page of N results
//   page: page number, start counting at 1
//   limit: number of shaders to fetch
ShaderAPI.page = function(page, limit, cb){
  ShaderAPI.fetch({
    f: "range",
    last: (page-1) * limit,
    limit: limit || ShaderAPI.limit
  }, cb)
}

// history - get all previous versions of a shader
//   id: shader id
ShaderAPI.history = function(id, cb){
  ShaderAPI.fetch({
    f: "history",
    id: id
  }, cb)
}

// username - get all ids by a user
ShaderAPI.username = function(username, cb){
  ShaderAPI.fetch({
    f: "username",
    username: username
  }, cb)
}

// list_users - list all users
ShaderAPI.list_users = function(list_users, cb){
  ShaderAPI.fetch({
    f: "list_users"
  }, cb)
}

// originals - get the earliest version of all named shaders
ShaderAPI.originals = function(cb){
  ShaderAPI.fetch({
    f: "originals"
  }, cb)
}

// fetch - AJAX wrapper
ShaderAPI.fetch = function(params, cb){
  $.ajax({
  	url: "http://asdf.us/cgi-bin/im/shader/view",
  	data: params,
  	dataType: "jsonp",
  	success: function(data){
			if (data.SUCCESS) {
				cb(null, data.data)
			}
			else if (data.ERROR) {
				cb(data.ERROR, data.data)
			}
		}
  })
}