#include "umake.h"

#ifndef bmYEAR
#include <build_info.h>
#endif

bool SilentMode;

String GetUmkFile(const char *fn)
{
	if(FileExists(fn))
		return NormalizePath(fn);
	if(DirectoryExists(fn) || *fn == '.')
		return Null;
	String h = ConfigFile(fn);
	if(FileExists(h))
		return h;
	String cfgdir = GetFileFolder(GetFileFolder(ConfigFile("x")));
	ONCELOCK
		PutVerbose("Config directory: " << cfgdir);
	return GetFileOnPath(fn,
	                     cfgdir + "/umk" + ';' +
	                     cfgdir + "/theide" + ';' +
	                     cfgdir + "/ide" + ';' +
	                     GetHomeDirectory() + ';' +
	                     GetFileFolder(GetExeFilePath()));
}

String GetBuildMethodPath(String method)
{
	if(GetFileExt(method) != ".bm")
		method << ".bm";
	return GetUmkFile(method);
}

String Ide::GetDefaultMethod()
{
	return "GCC";
}

String ReplaceMethodDir(String paths, const String& method_dir)
{
	constexpr const char* METHOD_DIR = "${METHOD_DIR}";
	
	if (paths.Find(METHOD_DIR) == -1) {
		return paths;
	}
	paths.Replace(METHOD_DIR, method_dir);
	return paths;
}

VectorMap<String, String> Ide::GetMethodVars(const String& method)
{
	VectorMap<String, String> map;
	LoadVarFile(GetMethodName(method), map);
	
	const String method_dir = GetFileFolder(method);
	const Vector<String> categories_with_method_dir = {"PATH", "INCLUDE", "LIB" };
	for (const auto& category : categories_with_method_dir) {
		map.GetAdd(category) = ReplaceMethodDir(map.Get(category), method_dir);
	}

	return map;
}

String Ide::GetMethodName(const String& method)
{
	return GetBuildMethodPath(method);
}

void Puts(const char *s)
{
	if(!SilentMode)
		Cout() << s;
}

String GetAndroidSDKPath()
{
	return String();
}

#ifdef flagMAIN

String GenerateVersionNumber()
{
#ifdef bmGIT_REVCOUNT
	return AsString(atoi(bmGIT_REVCOUNT) + 2270);
#endif
	return "";
}

CONSOLE_APP_MAIN
{
	SetConfigName("theide");

#ifdef PLATFORM_POSIX
	setlinebuf(stdout);
	CreateBuildMethods();
#endif

	Ide ide;
	SetTheIde(&ide);
	ide.console.SetSlots(CPU_Cores());
	ide.console.console = true;

	ide.debug.def.blitz = ide.release.def.blitz = 0;
	ide.debug.def.debug = 2;
	ide.release.def.debug = 0;
	ide.debug.package.Clear();
	ide.release.package.Clear();
	ide.debug.linkmode = ide.release.linkmode = 0;
	ide.release.createmap = ide.debug.createmap = false;
	ide.targetmode = 0;
	ide.use_target = false;
	ide.makefile_svn_revision = false;
	bool clean = false;
	bool makefile = false;
	bool ccfile = false;
	bool deletedir = true;
	int  exporting = 0;
	bool run = false;
	bool auto_hub = false;
	bool update_hub = false;
	bool only_hub = false;
	String hub_dir;
	String out_dir;
	bool flatpak_build = !GetEnv("FLATPAK_ID").IsEmpty();
	String mkf;

	Vector<String> param, runargs;

	const Vector<String>& args = CommandLine();
	for(int i = 0; i < args.GetCount(); i++) {
		String a = args[i];
		if(a.StartsWith("--")) {
			String ar = a.Right(a.GetCount() - 2);
			if(ar == "hub-dir") {
				if(i + 1 >= args.GetCount()) {
					Puts("UppHub directory not specified");
					SetExitCode(7);
					return;
				}
				
				hub_dir = args[++i];
			}
			else
			if(ar == "hub-only") {
				only_hub = true;
			}
			else
			if(ar == "out-dir") {
				if(i + 1 >= args.GetCount()) {
					Puts("Output directory not specified");
					SetExitCode(7);
					return;
				}
				
				out_dir = args[++i];
			}
			else {
				Puts(String("Unrecognized parameter \"") + a + "\".");
				SetExitCode(7);
				return;
			}
		}
		else
		if(*a == '-') {
			for(const char *s = ~a + 1; *s; s++)
				switch(*s) {
				case 'a': clean = true; break;
				case 'r': ide.targetmode = 1; break;
				case 'm': ide.release.createmap = ide.debug.createmap = true; break;
				case 'b': ide.release.def.blitz = ide.debug.def.blitz = 1; break;
				case 's': ide.debug.linkmode = ide.release.linkmode = 1; break;
				case 'd': ide.debug.def.debug = 0; break;
				case 'S': ide.debug.linkmode = ide.release.linkmode = 2; break;
				case 'v': ide.console.verbosebuild = true; break;
				case 'l': SilentMode = true; break;
				case 'x': exporting = 1; break;
				case 'X': exporting = 2; break;
				case 'k': deletedir = false; break;
				case 'u': ide.use_target = true; break;
				case 'j': ccfile = true; break;
				case 'h': auto_hub = true; break;
				case 'U': update_hub = true; break;
				case 'M': {
					makefile = true;
					if(s[1] == '=') {
						mkf = NormalizePath(s + 2);
						PutVerbose("Generating Makefile: " + mkf);
						goto endopt;
					}
					else
						PutVerbose("Generating Makefile");
					break;
				}
				case 'H': {
					int n = 0;
					while(IsDigit(s[1])) {
						n = 10 * n + s[1] - '0';
						s++;
					}
					if(!n)
						n = CPU_Cores();
					n = minmax(n, 1, 256);
					PutVerbose("Hydra threads: " + AsString(n));
					ide.console.SetSlots(n);
					break;
				}
				default:
					SilentMode = false;
					Puts("Invalid build option(s)");
					SetExitCode(3);
					return;
				}
		endopt:;
		}
		else
		if(*a == '+')
			ide.mainconfigparam = Filter(~a + 1, [](int c) { return c == ',' ? ' ' : c; });
		else
		if(*a == '!') {
			run = true;
			for(int j = i + 1; j < args.GetCount(); j++)
				runargs.Add(args[j]);
			if(runargs)
				PutVerbose("Set to execute the result with args: " << Join(runargs, " "));
			else
				PutVerbose("Set to execute the result");
			break;
		}
		else
			param.Add(a);
	}

	UppHubSetupDirForUmk(hub_dir, auto_hub);

	if(param.GetCount() >= 2) {
		String v = GetUmkFile(param[0] + ".var");
		if(IsNull(v)) {
		#ifdef PLATFORM_POSIX
			Vector<String> h = Split(param[0], [](int c) { return c == ':' || c == ',' ? c : 0; });
		#else
			Vector<String> h = Split(param[0], ',');
		#endif
			for(int i = 0; i < h.GetCount(); i++)
				h[i] = GetFullPath(TrimBoth(h[i]));
			String x = Join(h, ";");
			SetVar("UPP", x, false);
			PutVerbose("Inline assembly: " + x);
			if(out_dir.IsEmpty()) {
				if(flatpak_build)
					out_dir = GetExeFolder() + DIR_SEPS + ".cache" + DIR_SEPS + "upp.out";
				else
					out_dir = GetDefaultUppOut();
			}

			if(!IsFullPath(out_dir))
                out_dir = GetCurrentDirectory() + DIR_SEPS + out_dir;

			if(!RealizeDirectory(out_dir)) {
				Puts("Invalid output directory \"" + out_dir + "\".");
				SetExitCode(8);
				return;
			}

			SetVar("OUTPUT", out_dir, false);
		}
		else {
			if(!LoadVars(v)) {
				Puts("Invalid assembly\n");
				SetExitCode(2);
				return;
			}
			PutVerbose("Assembly file: " + v);
			PutVerbose("Assembly: " + GetVar("UPP"));
		}
		PutVerbose("Output directory: " + GetUppOut());
		ide.main = param[1];
		v = SourcePath(ide.main, GetFileTitle(ide.main) + ".upp");
		PutVerbose("Main package: " + v);
		if(!FileExists(v)) {
			Puts("Package " + ide.main + " does not exist\n");
			SetExitCode(2);
			return;
		}
		if(auto_hub || update_hub) {
			if(!UppHubAuto(ide.main)) {
				SetExitCode(6);
				return;
			}
			if(update_hub)
				UppHubUpdate(ide.main);
		}
		if(only_hub) {
			int exit_code = 0;
			if(!auto_hub && !update_hub) {
				exit_code = 6;
				Puts("The --hub-only option was specified, but UppHub mode instruction are "
				     "missing. Please ensure you include the -U or -h flag for the required "
				     "UppHub mode configuration.\n");
			}
			SetExitCode(exit_code);
			return;
		}
		ide.wspc.Scan(ide.main);
		const Workspace& wspc = ide.IdeWorkspace();
		if(!wspc.GetCount()) {
			Puts("Empty assembly\n");
			SetExitCode(4);
			return;
		}
		Index<String> missing;
		for(int i = 0; i < wspc.GetCount(); i++) {
			String p = wspc[i];
			if(!FileExists(PackageFile(p)))
				missing.FindAdd(p);
		}
		if(missing.GetCount()) {
			Puts("Missing package(s): " << Join(missing.GetKeys(), " ") << "\n");
			SetExitCode(5);
			return;
		}
		if(IsNull(ide.mainconfigparam)) {
			const Array<Package::Config>& f = wspc.GetPackage(0).config;
			if(f.GetCount())
				ide.mainconfigparam = f[0].param;
		}
		PutVerbose("Build flags: " << ide.mainconfigparam);
		String m = 2 < param.GetCount() ? param[2] : "CLANG";
		String bp = GetBuildMethodPath(m);
		PutVerbose("Build method: " + bp);
		if(bp.GetCount() == 0) {
			SilentMode = false;
			Puts("Invalid build method\n");
			SetExitCode(3);
			return;
		}

		if(3 < param.GetCount()) {
			ide.debug.target_override = ide.release.target_override = true;
			ide.debug.target = ide.release.target = NormalizePath(param[3]);
			PutVerbose("Target override: " << ide.debug.target);
		}

		ide.method = bp;

		if(ccfile) {
			ide.SaveCCJ(GetFileDirectory(PackageFile(ide.main)) + "compile_commands.json", false);
			SetExitCode(0);
			return;
		}

		if(clean)
			ide.Clean();
		if(exporting) {
			mkf = GetFullPath(mkf);
			Cout() << mkf << '\n';
			RealizeDirectory(mkf);
			if(makefile)
				ide.ExportMakefile(mkf);
			else
				ide.ExportProject(mkf, exporting == 2, deletedir);
		}
		else
		if(makefile) {
			ide.SaveMakeFile(IsNull(mkf) ? "Makefile" : mkf, false);
			SetExitCode(0);
		}
		else
		if(ide.Build()) {
			SetExitCode(0);
			if(run) {
				Vector<char *> args;
				Vector<Buffer<char>> buffer;
				auto Add = [&](const String& s) {
					auto& b = buffer.Add();
					b.Alloc(s.GetCount() + 1);
					memcpy(b, s, s.GetCount() + 1);
					args.Add(b);
				};
				Add(ide.target);
				for(const String& s : runargs)
					Add(s);
				args.Add(NULL);
				SetExitCode((int)execv(ide.target, args.begin()));
			}
		}
		else
			SetExitCode(1);
	}
	else {
		String version = GenerateVersionNumber();
		Puts("umk (U++MaKe) " + version + "\n\n"
		     "Usage:\n"
		     "    umk assembly package [build_method] [--hub-dir dir] [--hub-only] [-options] [+flags] [out]\n"
		     "    [! [runarg]..]\n\n"
		     "Arguments:\n"
		     "    assembly     - is a direct set of package nest directories relative to working directory that\n"
		     "                   represent U++ assembly separated by ','.\n"
		     "    package      - is the main package (a program to build).\n"
		     "    build_method - is build method that is to be used to build the resulting executable. If not\n"
		     "                   specified, CLANG build method is assumed. Note that in POSIX, umk automatically\n"
		     "                   creates CLANG and GCC build methods if they do not exist.\n"
		     "    Optional parameters:\n"
		     "        --hub-dir  - specifies the directory where UppHub packages should be downloaded, using\n"
		     "                     the second parameter, dir, to set the path.\n"
		     "        --hub-only - instructs UMK to handle only the logic related to UppHub.\n"
		     "        --out-dir  - specifies the directory where UMK stores build artifacts,\n"
		     "                     using the second parameter, dir, to define the path.\n"
		     "    Additional options [-options for example -brU]:\n"
		     "        a - rebuild all.\n"
		     "        b - use BLITZ.\n"
		     "        l - silent mode.\n"
		     "        u - use target directory.\n"
		     "        m - create a map file.\n"
		     "        r - release mode.\n"
		     "        d - debug mode without debug symbols.\n"
		     "        s - use shared libraries.\n"
		     "        S - use shared libraries and build as shared libraries.\n"
		     "        v - be verbose\n"
		     "        M - create makefile (to file Makefile)\n"
		     "        M=makefile - create makefile with given name.\n"
		     "        Hn - number of threads used for build. Default is number of logical cores available.\n"
		     "        h - enables downloading missing packages from UppHub. This command removes any other\n"
		     "            UppHub packages if exists.\n"
		     "        U - Install missing packages from UppHub and update all UppHub nests to the latest versions.\n"
		     "            Do not delete any existing UppHub packages.\n"
		     "        j - generate compile_commands.json\n"
		     "        x - export projects sources and documentation\n"
		     "        X - export entire project\n"
		     "        k - delete target directory before project export\n\n"
		     "        If none of the above options are provided, a debug build with symbols will be executed\n"
		     "        by default.\n"
		     "    flags - are compilation flags. If flags are not specified, the first main configuration\n"
		     "            entry in .upp file is used by default. Use commas to chain multiple flags,\n"
		     "            such as +GUI,SHARED.\n"
		     "    out   - overrides output name, file or directory.\n"
		     "    !     - means the the resulting binary should be also executed after successful build, using\n"
		     "            optional arguments after ! as its arguments.\n"
		     "\nExamples:\n"
		     "    Basic:\n"
		     "        umk examples Bombs CLANG -ab +GUI,SHARED ~/bombs\n"
		     "        umk ~/upp.src/examples,~/upp.src/uppsrc Bombs ~/GCC.bm -rv +GUI,SHARED ~/bin\n"
		     "        umk ./,3p/uppsrc UppTerm 3p/umk/CLANG.bm --hub-dir 3p/hub -brU +GUI,SHARED build/UppTerm\n\n"
		     "    Below is an example of how to download UppHub dependencies without triggering a build:\n"
		     "        umk ./,3p/uppsrc UppTerm 3p/umk/CLANG.bm --hub-dir 3p/hub --hub-only -U\n\n"
		     "See https://www.ultimatepp.org/app$ide$umk$en-us.html for more details.\n");
	}
}

#endif