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#include "main.h"
#include "api__ml_wire.h"
#include "Cloud.h"
#include "FeedParse.h"
#include "Defaults.h"
#include "./subscriptionView.h"
#include "ChannelRefresher.h"
#include "Util.h"
#include <algorithm>
#include <strsafe.h>
/* benski> TODO rewrite Callback() so we don't have to reserve a thread */
using namespace Nullsoft::Utility;
#define CLOUD_TICK_MS 60000
ChannelRefresher channelRefresher;
static bool kill = false;
static __time64_t RetrieveMinimalUpdateTime()
{
__time64_t minUpdateTime = 0;
AutoLock lock (channels LOCKNAME("RetrieveMinimalUpdateTime"));
ChannelList::iterator itr;
for (itr=channels.begin(); itr!=channels.end(); itr++)
{
if (itr->useDefaultUpdate)
{
if ( !updateTime ) autoUpdate = 0;
if ( autoUpdate && (!minUpdateTime || minUpdateTime && (updateTime < minUpdateTime)) )
{
minUpdateTime = updateTime;
}
}
else // use the custom values
{
if ( !itr->updateTime ) itr->autoUpdate = 0;
if ( itr->autoUpdate && (!minUpdateTime || minUpdateTime && (itr->updateTime < minUpdateTime)) )
{
minUpdateTime = itr->updateTime;
}
}
}
return minUpdateTime;
}
int Cloud::CloudThreadPoolFunc(HANDLE handle, void *user_data, intptr_t id)
{
Cloud *cloud = (Cloud *)user_data;
if (kill)
{
WASABI_API_THREADPOOL->RemoveHandle(0, cloud->cloudEvent);
CloseHandle(cloud->cloudEvent);
WASABI_API_THREADPOOL->RemoveHandle(0, cloud->cloudTimerEvent);
cloud->cloudTimerEvent.Close();
SetEvent(cloud->cloudDone);
return 0;
}
cloud->Callback();
// set waitable timer, overwrite previouse value if any
if (!kill)
{
__time64_t timeToWait = RetrieveMinimalUpdateTime();
if ( timeToWait )
cloud->cloudTimerEvent.Wait(timeToWait * 1000);
}
return 0;
}
Cloud::Cloud() : cloudThread(0), cloudEvent(0), statusText(0)
{}
Cloud::~Cloud()
{
free(statusText);
}
void Cloud::Quit()
{
cloudDone= CreateEvent(NULL, FALSE, FALSE, NULL);
kill = true;
SetEvent(cloudEvent);
WaitForSingleObject(cloudDone, INFINITE);
CloseHandle(cloudDone);
}
void Cloud::RefreshAll()
{
AutoLock lock (channels LOCKNAME("RefreshAll"));
ChannelList::iterator itr;
for (itr = channels.begin();itr != channels.end();itr++)
{
itr->needsRefresh = true;
}
}
void Cloud::Init()
{
// setup a periodic callback so we can check on our times
cloudEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
cloudThread = WASABI_API_THREADPOOL->ReserveThread(0);
WASABI_API_THREADPOOL->AddHandle(cloudThread, cloudEvent, CloudThreadPoolFunc, this, 0, 0);
WASABI_API_THREADPOOL->AddHandle(cloudThread, cloudTimerEvent, CloudThreadPoolFunc, this, 1, 0);
__time64_t timeToWait = RetrieveMinimalUpdateTime();
if ( timeToWait )
cloudTimerEvent.Wait(timeToWait * 1000);
}
void Cloud::Refresh(Channel &channel)
{
wchar_t lang_buf[1024] = {0};
WASABI_API_LNGSTRINGW_BUF(IDS_RECEIVING_UPDATES_FOR, lang_buf, 1024);
if (channel.title)
StringCbCat(lang_buf, sizeof(lang_buf), channel.title);
else
lang_buf[0]=0;
SetStatus(lang_buf);
size_t oldSize = channel.items.size();
FeedParse downloader(&channelRefresher, false);
downloader.DownloadURL(channel.url);
if (channel.items.size() > oldSize)
{
WASABI_API_LNGSTRINGW_BUF(IDS_GOT_NEW_ITEMS_FOR, lang_buf, 1024);
StringCbCat(lang_buf, sizeof(lang_buf), channel.title);
SetStatus(lang_buf);
}
else
SetStatus(L"");
}
void Cloud::GetStatus(wchar_t *status, size_t len)
{
AutoLock lock (statusGuard);
if (statusText)
StringCchCopy(status, len, statusText);
else
status[0]=0;
}
void Cloud::SetStatus(const wchar_t *newStatus)
{
AutoLock lock (statusGuard);
free(statusText);
statusText = _wcsdup(newStatus);
HWND hView = SubscriptionView_FindWindow();
if (NULL != hView)
SubscriptionView_SetStatus(hView, statusText);
}
/* --- Private Methods of class Cloud --- */
static void ForceLastUpdate(const Channel &channel)
{
AutoLock lock (channels LOCKNAME("ChannelRefresher::NewChannel"));
ChannelList::iterator found;
for (found=channels.begin();found!=channels.end(); found++)
{
if (!wcscmp(found->url, channel.url))
break;
}
if (found != channels.end())
{
found->lastUpdate = _time64(0);
found->needsRefresh = false;
}
}
/*
@private
checks all channels and updates any that requiring refreshing.
*/
void Cloud::Callback()
{
__time64_t curTime = _time64(0);
size_t i = 0;
Channel temp;
bool refreshed = false;
while (true) // we need to lock the channels object before we check its size, etc, so we can't just use a "for" loop.
{
{ // we want to minimize how long we have to lock, so we'll make a copy of the channel data
AutoLock lock (channels LOCKNAME("Callback"));
if (i >= channels.size())
break;
temp = channels[i]; // make a copy the data so we can safely release the lock
channels[i].needsRefresh = false; // have to set this now. if the site is down or 404, then the refresh will never "complete".
} // end locking scope
if (temp.needsRefresh) // need an immediate refresh? (usually set when the user clicks refresh or update-on-launch is on)
{
Refresh(temp);
refreshed = true;
}
else if (temp.useDefaultUpdate) // this flag is set unless the user chose custom update values
{
if (!updateTime) autoUpdate = 0;
if (autoUpdate && (temp.lastUpdate + updateTime) <= curTime)
{
Refresh(temp);
ForceLastUpdate(temp);
refreshed = true;
}
}
else // use the custom values
{
if (temp.updateTime == 0) temp.autoUpdate = 0;
if (temp.autoUpdate && (temp.lastUpdate + temp.updateTime) <= curTime)
{
Refresh(temp);
ForceLastUpdate(temp);
refreshed = true;
}
}
i++;
}
// if we're refreshing then save out
if (refreshed)
{
SaveAll();
}
}
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