Current File : //usr/share/grilo-plugins/grl-lua-factory/grl-guardianvideos.lua
--[[
* Copyright (C) 2014 Bastien Nocera
*
* Contact: Bastien Nocera <hadess@hadess.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
--]]
-- Test the API at:
-- http://explorer.content.guardianapis.com/search?api-key=rppwmmu3mfqj6gkbs8kcjg23&show-fields=all&page-size=50&tag=type/video
GUARDIANVIDEOS_URL = 'http://content.guardianapis.com/search?tag=type/video&page=%d&page-size=%d&show-fields=all&api-key=%s'
---------------------------
-- Source initialization --
---------------------------
source = {
id = "grl-guardianvideos-lua",
name = "The Guardian Videos",
description = "A source for browsing videos from the Guardian",
supported_keys = { "id", "thumbnail", "title", "url" },
supported_media = 'video',
config_keys = {
required = { "api-key" },
},
auto_split_threshold = 50,
icon = 'resource:///org/gnome/grilo/plugins/guardianvideos/guardianvideos.svg',
tags = { 'news', 'net:internet', 'net:plaintext' }
}
------------------
-- Source utils --
------------------
self = {}
function grl_source_init (configs)
self.api_key = configs.api_key
return true
end
function grl_source_browse(media_id)
local count = grl.get_options("count")
local skip = grl.get_options("skip")
local urls = {}
local page = skip / count + 1
if page > math.floor(page) then
local url = string.format(GUARDIANVIDEOS_URL, math.floor(page), count, self.api_key)
grl.debug ("Fetching URL #1: " .. url .. " (count: " .. count .. " skip: " .. skip .. ")")
table.insert(urls, url)
url = string.format(GUARDIANVIDEOS_URL, math.floor(page) + 1, count, self.api_key)
grl.debug ("Fetching URL #2: " .. url .. " (count: " .. count .. " skip: " .. skip .. ")")
table.insert(urls, url)
else
local url = string.format(GUARDIANVIDEOS_URL, page, count, self.api_key)
grl.debug ("Fetching URL: " .. url .. " (count: " .. count .. " skip: " .. skip .. ")")
table.insert(urls, url)
end
grl.fetch(urls, guardianvideos_fetch_cb)
end
------------------------
-- Callback functions --
------------------------
-- return all the media found
function guardianvideos_fetch_cb(results)
local count = grl.get_options("count")
for i, result in ipairs(results) do
local json = {}
json = grl.lua.json.string_to_table(result)
if not json or json.stat == "fail" or not json.response or not json.response.results then
grl.callback()
return
end
for index, item in pairs(json.response.results) do
local media = create_media(item)
count = count - 1
grl.callback(media, count)
end
-- Bail out if we've given enough items
if count == 0 then
return
end
end
end
-------------
-- Helpers --
-------------
function create_media(item)
local media = {}
media.type = "video"
media.id = item.id
media.title = grl.unescape(item.webTitle)
main = item.fields.main
-- Some entries rarely don't have a 'main' field. So, we bail out.
if not main then
grl.warning ("No media URL metadata found for: " .. media.title)
return media
end
media.url = main:match('src="(.-%.mp4)"')
media.thumbnail = main:match('poster="(.-%.jpg)"')
if not media.url then
grl.warning ("No media streaming URL found for: " .. media.title)
grl.debug ("Data from: " .. media.title .. "\n" .. grl.lua.inspect(item));
end
if not media.thumbnail then
-- Try to see if we have a 'thumbnail' field. This field seems
-- to exist for some entries, which don't have a 'poster' field
if item.fields.thumbnail then
media.thumbnail = item.fields.thumbnail
else
grl.debug ("No media thumbnail URL found for: " .. media.title)
end
end
return media
end
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