#include "file_manager.h"
#include "shared.h"


FileManager::FileManager() {
	setName("FileManager");
	offset = cur = height = 0;
	enabled = del_commit = false;
	CONNECTU(&console, keyPressed, this, keyEvent)
	dir = PIDir::current();
	//dir.setDir("/home/peri4/Documents");
	dir.setDir("/home/peri4");
	updateDir();
}


void FileManager::keyEvent(char key) {
	if (!enabled) return;
	if (key == 'D') {
		if (cur >= files.size_s() || cur < 0) return;
		if (del_commit) {
			piForeachC (PIString & f, selected) {
				PIFile::remove(dir.absolutePath() + PIDir::separator + f);
				//piCout << "remove" << (dir.absolutePath() + PIDir::separator + f);
			}
			selected.clear();
			updateDir();
			console.clearCustomStatus();
			del_commit = false;
		} else {
			if (selected.isEmpty()) selected << files[cur].path;
			console.addCustomStatus("Delete " + PIString(selected.size_s()) + " file, are you sure? D as yes");
			del_commit = true;
		}
		updateConsole();
		return;
	}
	console.clearCustomStatus();
	del_commit = false;
	PIStringList nsel;
	switch (key) {
	case PIKbdListener::UpArrow:
		cur--;
		if (cur < 0) cur = 0;
		if (cur - offset < 3) offset--;
		if (offset < 0) offset = 0;
		updateConsole();
		break;
	case PIKbdListener::Space:
		if (cur < 0 || cur >= files.size_s()) return;
		if (selected.contains(files[cur].path)) selected.removeOne(files[cur].path);
		else selected << files[cur].path;
	case PIKbdListener::DownArrow:
		cur++;
		if (cur >= files.size_s()) cur = files.size_s() - 1;
		if (cur - offset >= height - 3) offset++;
		if (offset >= files.size_s() - height) offset = files.size_s() - height;
		updateConsole();
		//piCout << offset << files.size_s() << height;
		break;
	case PIKbdListener::Home:
		cur = offset = 0;
		updateConsole();
		break;
	case PIKbdListener::End:
		cur = files.size_s() - 1;
		offset = files.size_s() - height;
		updateConsole();
		//piCout << offset << files.size_s() << height;
		break;
	case PIKbdListener::Return:
		if (cur < files.size_s() && cur >= 0) {
			piCout << files[cur];
			if (files[cur].isDir()) {
				prev_pos[dir.path()] = cur;
				prev_off[dir.path()] = offset;
				dir.cd(files[cur].name());
				cur = prev_pos.value(dir.path(), 0);
				offset = prev_off.value(dir.path(), 0);
				selected.clear();
				updateDir();
				updateConsole();
			}
		}
		break;
	case 'A':
		selected.clear();
		piForeach (PIFile::FileInfo & e, files)
			selected << e.path;
		updateConsole();
		break;
	case 'R':
		updateDir();
		piForeach (PIFile::FileInfo & e, files)
			if (selected.contains(e.path))
				nsel << e.path;
		selected = nsel;
		updateConsole();
		break;
	case PIKbdListener::Esc:
		//selected.clear();
		//updateConsole();
		menuRequest();
		break;
	default: break;
	}
}


void FileManager::updateConsole() {
	if (!enabled) return;
	startTab(2);
	console.addString("File manager", 1, PIConsole::Yellow | PIConsole::Inverse);
	console.addString("Path: " + dir.absolutePath(), 1, PIConsole::Green | PIConsole::Inverse | PIConsole::Bold);
	console.addString("Name", 1, PIConsole::Green | PIConsole::Inverse | PIConsole::Bold);
	console.addString(" ", 2, PIConsole::Yellow | PIConsole::Inverse);
	console.addString(" ", 2, PIConsole::Green | PIConsole::Inverse);
	console.addString(" ", 2, PIConsole::Green | PIConsole::Inverse);
	buildNames();
	console.addString("A - select all, D - remove, R - refresh, Esc - exit", 1, PIConsole::Green | PIConsole::Inverse | PIConsole::Bold);
	finishTab();
}


void FileManager::buildNames() {
	if (!enabled) return;
	height = console.windowHeight() - 10;
	int is = piClampi(offset, 0, piMaxi(0, files.size_s() - 1)), ie = piClampi(offset + height, 0, files.size_s());
	console.addString((is > 0) ? (PIString(" /\\ ").repeat(console.windowWidth() / 8)) : " ", 1, PIConsole::Green | PIConsole::Bold);
	console.addString(" ", 2);
	PIChar t;
	PIConsole::FormatFlags f = 0;
	PIString scol;
	piCout << cur;
	for (int i = is; i < ie; ++i) {
		if (files[i].isDir()) {
			t = '/';
			f = PIConsole::Bold;
			scol = " dir";
		} else {
			if (files[i].perm_user.exec || files[i].perm_group.exec || files[i].perm_other.exec) {
				f = PIConsole::Green | PIConsole::Bold;
				t = '*';
			} else {
				t = ' ';
				f = 0;
			}
			scol = PIString::readableSize(files[i].size);
		}
		if (files[i].isSymbolicLink() && (t != '*')) t = '~';
		scol = scol.expandRightTo(9, ' ') + "| " + files[i].time_modification.toString("dd.MM hh:mm:ss") + " | "
				+ files[i].perm_user.toString() + " " + files[i].perm_group.toString() + " " + files[i].perm_other.toString();
		if (i == cur) f |= PIConsole::BackBlue;
		if (selected.contains(files[i].path)) f |= PIConsole::Yellow | PIConsole::Bold;
		console.addString(t + files[i].name(), 1, f);
		console.addString(scol, 2, f);
	}
	console.addString((ie < files.size_s()) ? (PIString(" \\/ ").repeat(console.windowWidth() / 8)) : " ", 1, PIConsole::Green | PIConsole::Bold);
	console.addString(" ", 2);
}


void FileManager::updateDir() {
	if (!enabled) return;
	files.clear();
	PIVector<PIFile::FileInfo> el = dir.entries(), fl, dl;
	for (int i = 0; i < el.size_s(); ++i) {
		if (el[i].path == ".") continue;
		if (el[i].path == "..") {
			dl.push_front(el[i]);
			continue;
		}
		if (el[i].isDir()) dl << el[i];
		else fl << el[i];
	}
	files << dl << fl;
	if (cur >= files.size_s()) cur = files.size_s() - 1;
	if (offset >= files.size_s() - height) offset = files.size_s() - height;
	if (cur < 0) cur = 0;
	if (offset < 0) offset = 0;
}