#include <stdio.h>
#include "PluginSys.h"

using namespace SourcePawn;

CPlugin *CPlugin::CreatePlugin(const char *file, 
								bool debug_default, 
								PluginLifetime life, 
								char *error, 
								size_t maxlen)
{
	static unsigned int MySerial = 0;
	FILE *fp = fopen(file, "rb");

	if (!fp)
	{
		snprintf(error, maxlen, "Could not open file");
		return NULL;
	}

	int err;
	sp_plugin_t *pl = g_pSourcePawn->LoadFromFilePointer(fp, &err);
	if (pl == NULL)
	{
		snprintf(error, maxlen, "Could not load plugin, error %d", err);
		return NULL;
	}

	fclose(fp);

	ICompilation *co = g_pVM->StartCompilation(pl);
	
	if (debug_default)
	{
		if (!g_pVM->SetCompilationOption(co, "debug", "1"))
		{
			g_pVM->AbortCompilation(co);
			snprintf(error, maxlen, "Could not set plugin to debug mode");
			return NULL;
		}
	}

	sp_context_t *ctx = g_pVM->CompileToContext(co, &err);
	if (ctx == NULL)
	{
		snprintf(error, maxlen, "Plugin failed to load, JIT error: %d", err);
		return NULL;
	}

	IPluginContext *base = g_pSourcePawn->CreateBaseContext(ctx);
	CPlugin *pPlugin = new CPlugin;

	snprintf(pPlugin->m_filename, PLATFORM_MAX_PATH, "%s", file);
	pPlugin->m_debugging = debug_default;
	pPlugin->m_ctx_current.base = base;
	pPlugin->m_ctx_current.ctx = ctx;
	pPlugin->m_lifetime = life;
	pPlugin->m_lock = false;
	pPlugin->m_serial = ++MySerial;
	pPlugin->m_status = Plugin_Loaded;
	pPlugin->m_plugin = pl;

	pPlugin->UpdateInfo();

	return pPlugin;
}

void CPlugin::UpdateInfo()
{
	/* Now grab the info */
	uint32_t idx;
	IPluginContext *base = GetBaseContext();
	int err = base->FindPubvarByName("myinfo", &idx);

	if (err == SP_ERROR_NONE)
	{
		struct sm_plugininfo_c_t
		{
			cell_t name;
			cell_t description;
			cell_t author;
			cell_t version;
			cell_t url;
		};
		sm_plugininfo_c_t *cinfo;
		cell_t local_addr;

		base->GetPubvarAddrs(idx, &local_addr, (cell_t **)&cinfo);
		base->LocalToString(cinfo->name, (char **)&m_info.name);
		base->LocalToString(cinfo->description, (char **)&m_info.description);
		base->LocalToString(cinfo->author, (char **)&m_info.author);
		base->LocalToString(cinfo->url, (char **)&m_info.url);
		base->LocalToString(cinfo->version, (char **)&m_info.version);
	}

	m_info.author = m_info.author ? m_info.author : "";
	m_info.description = m_info.description ? m_info.description : "";
	m_info.name = m_info.name ? m_info.name : "";
	m_info.url = m_info.url ? m_info.url : "";
	m_info.version = m_info.version ? m_info.version : "";
}

const sp_plugin_t *CPlugin::GetPluginStructure() const
{
	return m_plugin;
}

IPluginContext *CPlugin::GetBaseContext() const
{
	return m_ctx_current.base;
}

sp_context_t *CPlugin::GetContext() const
{
	return m_ctx_current.ctx;
}

const char *CPlugin::GetFilename() const
{
	return m_filename;
}

PluginLifetime CPlugin::GetLifetime() const
{
	return m_lifetime;
}

bool CPlugin::GetLockForUpdates() const
{
	return m_lock;
}

const sm_plugininfo_t *CPlugin::GetPublicInfo() const
{
	return &m_info;
}

unsigned int CPlugin::GetSerial() const
{
	return m_serial;
}

PluginStatus CPlugin::GetStatus() const
{
	return m_status;
}

bool CPlugin::IsDebugging() const
{
	return m_debugging;
}

void CPlugin::SetLockForUpdates(bool lock_status)
{
	m_lock = lock_status;
}

bool CPlugin::SetPauseState(bool paused)
{
	if (paused && GetStatus() != Plugin_Paused)
	{
		return false;
	} else if (!paused && GetStatus() != Plugin_Running) {
		return false;
	}
	
	/* :TODO: execute some forwards or some crap */

	return true;
}