// Copyright 2005-2019 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.

#include "../mumble_plugin_win32.h" // Include standard plugin header.
#include "../mumble_plugin_utils.h" // Include plugin header for special functions, like "escape".

static int fetch(float *avatar_pos, float *avatar_front, float *avatar_top, float *camera_pos, float *camera_front, float *camera_top, std::string &context, std::wstring &identity) {
	for (int i=0;i<3;i++) {
		avatar_pos[i] = avatar_front[i] = avatar_top[i] = camera_pos[i] = camera_front[i] = camera_top[i] = 0.0f;
	}

	bool ok, state;
	char serverid[37], host[22], team[3];
	BYTE squad, squad_leader, squad_state;

	// Server ID pointers
	procptr_t serverid_base = peekProcPtr(pModule + 0x1D39C64);
	if (!serverid_base) return false;
	procptr_t serverid_offset_0 = peekProcPtr(serverid_base + 0xC);
	if (!serverid_offset_0) return false;
	procptr_t serverid_offset_1 = peekProcPtr(serverid_offset_0 + 0x14);
	if (!serverid_offset_1) return false;
	procptr_t serverid_offset = peekProcPtr(serverid_offset_1 + 0x1D0);
	if (!serverid_offset) return false;

	// Squad pointers
	procptr_t squad_base = peekProcPtr(pModule + 0x1D39D0C);
	if (!squad_base) return false;
	procptr_t squad_offset_0 = peekProcPtr(squad_base + 0x7C);
	if (!squad_offset_0) return false;
	procptr_t squad_offset_1 = peekProcPtr(squad_offset_0 + 0x728);
	if (!squad_offset_1) return false;

	// Peekproc and assign game addresses to our containers, so we can retrieve positional data
	ok = peekProc(pModule + 0x1D23B0E, &state, 1) && // Magical state value: 0 when in-game and 1 when in menu/dead.
	     peekProc(pModule + 0x1CFD3C0, avatar_pos, 12) && // Avatar Position values (X, Y and Z).
	     peekProc(pModule + 0x1D23CB0, camera_pos, 12) && // Camera Position values (X, Y and Z).
	     peekProc(pModule + 0x1D23C90, avatar_top, 12) && // Avatar Top Vector values (X, Y and Z).
	     peekProc(pModule + 0x1D23CA0, avatar_front, 12) && // Avatar Front Vector values (X, Y and Z).
	     peekProc(serverid_offset, serverid) && // Server ID (36 characters).
	     peekProc(pModule + 0x1CF3A68, host) && // Host value: "IP:Port" when in a server, "bot" when loading and empty when it's hidden.
	     peekProc(pModule + 0x1DCF695, team) && // Team value: US (United States); RU (Russia); CH (China).
	     peekProc(squad_offset_1 + 0x15C, squad) && // Squad value: 0 (not in a squad); 1 (Alpha); 2 (Bravo); 3 (Charlie)... 26 (Zulu).
	     peekProc(squad_offset_1 + 0x160, squad_leader) && // Squad leader value: 0 (False); 1 (True).
	     peekProc(squad_offset_1 + 0x161, squad_state); // Squad state value: 0 (Public); 1 (Private).

	// This prevents the plugin from linking to the game in case something goes wrong during values retrieval from memory addresses.
	if (! ok) {
		return false;
	}

	if (state) { // If not in-game
		context.clear(); // Clear context
		identity.clear(); // Clear identity
		// Set vectors values to 0.
		for (int i=0;i<3;i++) {
			avatar_pos[i] = avatar_front[i] = avatar_top[i] = camera_pos[i] =  camera_front[i] = camera_top[i] = 0.0f;
		}

		return true; // This tells Mumble to ignore all vectors.
	}

	escape(serverid, sizeof(serverid));
	std::ostringstream ocontext;
	ocontext << " {\"Server ID\": \"" << serverid << "\"}"; // Set context with server ID
	context = ocontext.str();

	std::wostringstream oidentity;
	oidentity << "{";
	escape(host, sizeof(host));
	// Only include host (IP:port) if it is not empty and does not include the string "bot" (which means it's a local server).
	if (strcmp(host, "") != 0 && strstr(host, "bot") == NULL) {
		oidentity << std::endl << "\"Host\": \"" << host << "\",";
	}

	std::string Team(team);
	if (!Team.empty()) {
		oidentity << std::endl;
		if (Team == "US")
			oidentity << "\"Team\": \"United States\","; // If team value is US, set "United States" as team in identity.
		else if (Team == "CH")
			oidentity << "\"Team\": \"China\","; // If team value is CH, set "China" as team in identity.
		else if (Team == "RU")
			oidentity << "\"Team\": \"Russia\","; // If team value is RU, set "Russia" as team in identity.
	}

	// If squad value is in a value between 1 and 26, set squad name in identity using NATO Phonetic alphabet.
	if (squad > 0 && squad < 27) {
		if (squad == 1)
			oidentity << std::endl << "\"Squad\": \"Alpha\",";
		else if (squad == 2)
			oidentity << std::endl << "\"Squad\": \"Bravo\",";
		else if (squad == 3)
			oidentity << std::endl << "\"Squad\": \"Charlie\",";
		else if (squad == 4)
			oidentity << std::endl << "\"Squad\": \"Delta\",";
		else if (squad == 5)
			oidentity << std::endl << "\"Squad\": \"Echo\",";
		else if (squad == 6)
			oidentity << std::endl << "\"Squad\": \"Foxtrot\",";
		else if (squad == 7)
			oidentity << std::endl << "\"Squad\": \"Golf\",";
		else if (squad == 8)
			oidentity << std::endl << "\"Squad\": \"Hotel\",";
		else if (squad == 9)
			oidentity << std::endl << "\"Squad\": \"India\",";
		else if (squad == 10)
			oidentity << std::endl << "\"Squad\": \"Juliet\",";
		else if (squad == 11)
			oidentity << std::endl << "\"Squad\": \"Kilo\",";
		else if (squad == 12)
			oidentity << std::endl << "\"Squad\": \"Lima\",";
		else if (squad == 13)
			oidentity << std::endl << "\"Squad\": \"Mike\",";
		else if (squad == 14)
			oidentity << std::endl << "\"Squad\": \"November\",";
		else if (squad == 15)
			oidentity << std::endl << "\"Squad\": \"Oscar\",";
		else if (squad == 16)
			oidentity << std::endl << "\"Squad\": \"Papa\",";
		else if (squad == 17)
			oidentity << std::endl << "\"Squad\": \"Quebec\",";
		else if (squad == 18)
			oidentity << std::endl << "\"Squad\": \"Romeo\",";
		else if (squad == 19)
			oidentity << std::endl << "\"Squad\": \"Sierra\",";
		else if (squad == 20)
			oidentity << std::endl << "\"Squad\": \"Tango\",";
		else if (squad == 21)
			oidentity << std::endl << "\"Squad\": \"Uniform\",";
		else if (squad == 22)
			oidentity << std::endl << "\"Squad\": \"Victor\",";
		else if (squad == 23)
			oidentity << std::endl << "\"Squad\": \"Whiskey\",";
		else if (squad == 24)
			oidentity << std::endl << "\"Squad\": \"X-ray\",";
		else if (squad == 25)
			oidentity << std::endl << "\"Squad\": \"Yankee\",";
		else if (squad == 26)
			oidentity << std::endl << "\"Squad\": \"Zulu\",";
		// Squad leader
		if (squad_leader == 1)
			oidentity << std::endl << "\"Squad leader\": true,"; // If squad leader value is true, set squad leader state to "True" in identity.
		else
			oidentity << std::endl << "\"Squad leader\": false,"; // If squad leader value is false, set squad leader state to "False" in identity.
		// Squad state
		if (squad_state == 1)
			oidentity << std::endl << "\"Squad state\": \"Private\""; // If squad state value is true, set squad state to "Private" in identity.
		else
			oidentity << std::endl << "\"Squad state\": \"Public\""; // If squad state value is false, set squad state to "Public" in identity.
		// When not in a squad
	} else {
		oidentity << std::endl << "\"Squad\": null,"; // If squad value isn't between 1 and 26, set squad to "null" in identity.
		oidentity << std::endl << "\"Squad leader\": null,"; // If not in a squad, set squad leader state to "null" in identity.
		oidentity << std::endl << "\"Squad state\": null"; // If not in a squad, set squad state to "null" in identity.
	}

	oidentity << std::endl << "}";
	identity = oidentity.str();

	// Flip the front vector
	for (int i=0;i<3;i++) {
		avatar_front[i] = -avatar_front[i];
	}

	// Convert from right to left handed
	avatar_pos[0] = -avatar_pos[0];
	camera_pos[0] = -camera_pos[0];
	avatar_front[0] = -avatar_front[0];
	avatar_top[0] = -avatar_top[0];

	// Sync camera front and top vectors with avatar ones
	for (int i=0;i<3;i++) {
		camera_front[i] = avatar_front[i];
		camera_top[i] = avatar_top[i];
	}

	return true;
}

static int trylock(const std::multimap<std::wstring, unsigned long long int> &pids) {

	if (! initialize(pids, L"bf4_x86.exe")) { // Link the game executable
		return false;
	}

	// Check if we can get meaningful data from it
	float apos[3], afront[3], atop[3], cpos[3], cfront[3], ctop[3];
	std::wstring sidentity;
	std::string scontext;

	if (fetch(apos, afront, atop, cpos, cfront, ctop, scontext, sidentity)) {
		return true;
	} else {
		generic_unlock();
		return false;
	}
}

static const std::wstring longdesc() {
	return std::wstring(L"Supports Battlefield 4 with context and identity support."); // Plugin long description
}

static std::wstring description(L"Battlefield 4 (x86) version 1.8.2.48475"); // Plugin short description
static std::wstring shortname(L"Battlefield 4"); // Plugin short name

static int trylock1() {
	return trylock(std::multimap<std::wstring, unsigned long long int>());
}

static MumblePlugin bf4plug = {
    MUMBLE_PLUGIN_MAGIC,
    description,
    shortname,
    NULL,
    NULL,
    trylock1,
    generic_unlock,
    longdesc,
    fetch
};

static MumblePlugin2 bf4plug2 = {
    MUMBLE_PLUGIN_MAGIC_2,
    MUMBLE_PLUGIN_VERSION,
    trylock
};

extern "C" MUMBLE_PLUGIN_EXPORT MumblePlugin *getMumblePlugin() {
	return &bf4plug;
}

extern "C" MUMBLE_PLUGIN_EXPORT MumblePlugin2 *getMumblePlugin2() {
	return &bf4plug2;
}
