#include <sstream>
#include <config.h>
#include <help_formaction.h>
#include <formatstring.h>
#include <view.h>
#include <listformatter.h>
#include <utils.h>
#include <keymap.h>
#include <cstring>

namespace newsbeuter {

help_formaction::help_formaction(view * vv, std::string formstr)
	: formaction(vv, formstr), quit(false), apply_search(false) { 
}

help_formaction::~help_formaction() { }

void help_formaction::process_operation(operation op, bool /* automatic */, std::vector<std::string> * /* args */) {
	switch (op) {
		case OP_QUIT:
			quit = true;
			break;
		case OP_SEARCH: {
				std::vector<qna_pair> qna;
				qna.push_back(qna_pair(_("Search for: "), ""));
				this->start_qna(qna, OP_INT_START_SEARCH, &searchhistory);
			}
			break;
		case OP_CLEARFILTER:
			apply_search = false;
			do_redraw = true;
			break;
		default:
			break;
	}
	if (quit) {
		v->pop_current_formaction();
	}
}

void help_formaction::prepare() {
	if (do_redraw) {
		std::string listwidth = f->get("helptext:w");
		std::istringstream is(listwidth);
		unsigned int width;
		is >> width;

		fmtstr_formatter fmt;
		fmt.register_fmt('N', PROGRAM_NAME);
		fmt.register_fmt('V', PROGRAM_VERSION);
		f->set("head",fmt.do_format(v->get_cfg()->get_configvalue("help-title-format"), width));
		
		std::vector<keymap_desc> descs;
		v->get_keys()->get_keymap_descriptions(descs, v->get_keys()->get_flag_from_context(context));

		std::string highlighted_searchphrase = utils::strprintf("<hl>%s</>", searchphrase.c_str());
		std::vector<std::string> colors = utils::tokenize(v->get_cfg()->get_configvalue("search-highlight-colors"), " ");
		f->set("highlight", make_colorstring(colors));
		listformatter listfmt;

		unsigned int unbound_count = 0;
		unsigned int syskey_count = 0;

		for (unsigned int i=0;i<3;i++) {
			for (std::vector<keymap_desc>::iterator it=descs.begin();it!=descs.end();++it) {
				bool condition;
				switch (i) {
					case 0: 
						condition = (it->key.length() == 0 || it->flags & KM_SYSKEYS); 
						if (it->key.length() == 0)
							unbound_count++;
						if (it->flags & KM_SYSKEYS)
							syskey_count++;
						break;
					case 1: 
						condition = !(it->flags & KM_SYSKEYS); 
						break;
					case 2: 
						condition = (it->key.length() > 0 || it->flags & KM_SYSKEYS); 
						break;
					default: condition = true; break;
				}
				if (context.length() > 0 && (it->ctx != context || condition))
					continue;
				if (!apply_search || strcasestr(it->key.c_str(), searchphrase.c_str())!=NULL || 
						strcasestr(it->cmd.c_str(), searchphrase.c_str())!=NULL ||
						strcasestr(it->desc.c_str(), searchphrase.c_str())!=NULL) {
					char tabs_1[] = "                ";
					char tabs_2[] = "                        ";
					unsigned int how_often_1 = strlen(tabs_1) - it->key.length();
					unsigned int how_often_2 = strlen(tabs_2) - it->cmd.length();
					tabs_1[how_often_1] = '\0';
					tabs_2[how_often_2] = '\0';
					std::string line;
					switch (i) {
						case 0:
						case 1: line = utils::strprintf("%s%s%s%s%s", it->key.c_str(), tabs_1, it->cmd.c_str(), tabs_2, it->desc.c_str()); break;
						case 2: line = utils::strprintf("%s%s%s%s", it->cmd.c_str(), tabs_1, tabs_2, it->desc.c_str()); break;
					}
					LOG(LOG_DEBUG, "help_formaction::prepare: step 1 - line = %s", line.c_str());
					line = utils::quote_for_stfl(line);
					LOG(LOG_DEBUG, "help_formaction::prepare: step 2 - line = %s", line.c_str());
					if (apply_search && searchphrase.length() > 0) {
						line = utils::replace_all(line, searchphrase, highlighted_searchphrase);
						LOG(LOG_DEBUG, "help_formaction::prepare: step 3 - line = %s", line.c_str());
					}
					listfmt.add_line(line);
				}
			}
			switch (i) {
				case 0:
					if (syskey_count > 0) {
						listfmt.add_line("");
						listfmt.add_line(_("Generic bindings:"));
						listfmt.add_line("");
					}
					break;
				case 1:
					if (unbound_count > 0) {
						listfmt.add_line("");
						listfmt.add_line(_("Unbound functions:"));
						listfmt.add_line("");
					}
				break;
			}
		}

		f->modify("helptext","replace_inner", listfmt.format_list());

		do_redraw = false;
	}
	quit = false;
}

void help_formaction::init() {
	set_keymap_hints();
}

keymap_hint_entry * help_formaction::get_keymap_hint() {
	static keymap_hint_entry hints[] = {
		{ OP_QUIT, _("Quit") },
		{ OP_SEARCH, _("Search") },
		{ OP_CLEARFILTER, _("Clear") },
		{ OP_NIL, NULL }
	};
	return hints;
}

void help_formaction::finished_qna(operation op) {
	switch (op) {
	case OP_INT_START_SEARCH:
		searchphrase = qna_responses[0];
		apply_search = true;
		do_redraw = true;
		break;
	default:
		break;
	}
}

void help_formaction::set_context(const std::string& ctx) {
	if (context != ctx) {
		do_redraw = true;
		context = ctx;
	}
}

std::string help_formaction::title() {
	return _("Help");
}

std::string help_formaction::make_colorstring(const std::vector<std::string>& colors) {
	std::string result;
	if (colors.size() > 0) {
		if (colors[0] != "default") {
			result.append("fg=");
			result.append(colors[0]);
		}
		if (colors.size() > 1) {
			if (colors[1] != "default") {
				if (result.length() > 0)
					result.append(",");
				result.append("bg=");
				result.append(colors[1]);
			}
		}
		for (unsigned int i=2;i<colors.size();i++) {
			if (result.length() > 0)
				result.append(",");
			result.append("attr=");
			result.append(colors[i]);
		}
	}
	return result;
}

}
.rs?h=release/v0.1'>release/v0.1</a></span></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>18</td><td><span class='deletions'>-87</span>/<span class='insertions'>+206</span></td></tr>
<tr><td><span title='2017-07-27 22:40:47 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/src/examples/_6_full_syntax.rs?h=v0.2.1&amp;id=e85d6e53c89cd1ea1da8826778c5a74154fb651d&amp;follow=1'>update examples</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>15</td><td><span class='deletions'>-294</span>/<span class='insertions'>+198</span></td></tr>
<tr><td><span title='2017-07-27 21:30:24 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/tests/cfail/token-transfer.rs?h=v0.2.1&amp;id=271df39bdba0690ea7ba77a6ff5d8d7edb9b8036&amp;follow=1'>`Send`-ness check is now in rtfm-core</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>3</td><td><span class='deletions'>-23</span>/<span class='insertions'>+10</span></td></tr>
<tr><td><span title='2017-07-27 19:39:18 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/macros/src/trans.rs?h=v0.2.1&amp;id=b9f50e432eb2fe0f1276bb69c053bb9a7368675a&amp;follow=1'>make task.$T.path mandatory</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>2</td><td><span class='deletions'>-56</span>/<span class='insertions'>+30</span></td></tr>
<tr><td><span title='2017-07-27 17:08:42 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/tests/cfail/wrong-threshold.rs?h=v0.2.1&amp;id=d396da59502ef67f624bb4d8927ff8697232f66c&amp;follow=1'>make task.$T.enabled optional</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>17</td><td><span class='deletions'>-91</span>/<span class='insertions'>+111</span></td></tr>
<tr><td><span title='2017-07-27 15:15:19 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/src/lib.rs?h=v0.2.1&amp;id=ad2a523cf9d39191d54f4dda3c99f22b5bade7de&amp;follow=1'>fix yet another warning on ARMv6-M</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+3</span></td></tr>
<tr><td><span title='2017-07-27 15:02:25 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/ci/script.sh?h=v0.2.1&amp;id=7d0c07cd3963a48ebaae168f76191affca780dae&amp;follow=1'>travis: install linker</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>3</td><td><span class='deletions'>-3</span>/<span class='insertions'>+31</span></td></tr>
<tr><td><span title='2017-07-27 14:59:31 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/src/lib.rs?h=v0.2.1&amp;id=5e83dc295e020b635863c003a614f9fb895daa9a&amp;follow=1'>fix warning on ARMv6-M</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+2</span></td></tr>
<tr><td><span title='2017-07-27 12:29:52 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/macros/src/trans.rs?h=v0.2.1&amp;id=dd539d114fe874c2793cef08360d078fec86813a&amp;follow=1'>don't generate empty modules</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-11</span>/<span class='insertions'>+16</span></td></tr>
<tr><td><span title='2017-07-27 12:11:22 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/macros/src/check.rs?h=v0.2.1&amp;id=b37c45ad2a295f067b6cacf9424ff9f68674f82b&amp;follow=1'>make task.$T.priority optional</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-20</span>/<span class='insertions'>+8</span></td></tr>
<tr><td><span title='2017-07-27 11:40:15 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/tests/cfail/wrong-threshold.rs?h=v0.2.1&amp;id=aa2249454975a203e459597005944f5370c1d200&amp;follow=1'>update tests and examples</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>17</td><td><span class='deletions'>-230</span>/<span class='insertions'>+68</span></td></tr>
<tr><td><span title='2017-07-27 11:37:58 -0500'>2017-07-27</span></td><td><a href='/ansg191/rtic/commit/src/lib.rs?h=v0.2.1&amp;id=0b5afce771cb9e5cc42c4fd4c5e18f020bf1ecad&amp;follow=1'>refactor Resource / Threshold into its own crate, drop task!, tweak rtfm::atomic</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>3</td><td><span class='deletions'>-154</span>/<span class='insertions'>+47</span></td></tr>
<tr><td><span title='2017-07-26 19:30:47 -0500'>2017-07-26</span></td><td><a href='/ansg191/rtic/commit/macros/src/trans.rs?h=v0.2.1&amp;id=dee2fcde716a2dbb1404caa4e0f8f4ce11c472c8&amp;follow=1'>provide a Threshold token even when all resources are lockless</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-7</span>/<span class='insertions'>+5</span></td></tr>
<tr><td><span title='2017-07-26 17:01:53 -0500'>2017-07-26</span></td><td><a href='/ansg191/rtic/commit/macros/src/trans.rs?h=v0.2.1&amp;id=4a1509cb53d9b8a33c17264fa54cca8886788073&amp;follow=1'>fix around owned idle resource</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-1</span>/<span class='insertions'>+5</span></td></tr>
<tr><td><span title='2017-07-25 22:30:41 -0500'>2017-07-25</span></td><td><a href='/ansg191/rtic/commit/src/lib.rs?h=v0.2.1&amp;id=6a2ff0aede787d0d6f2ac55e30fb1a248881155d&amp;follow=1'>inline claim</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+1</span></td></tr>
<tr><td><span title='2017-07-25 22:27:57 -0500'>2017-07-25</span></td><td><a href='/ansg191/rtic/commit/macros/src/trans.rs?h=v0.2.1&amp;id=8aa3621034626114716dc7d26443bc39cd717715&amp;follow=1'>fix errors around the use of `super` in relative paths</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-4</span>/<span class='insertions'>+4</span></td></tr>
<tr><td><span title='2017-07-24 23:07:11 -0500'>2017-07-24</span></td><td><a href='/ansg191/rtic/commit/macros/src/trans.rs?h=v0.2.1&amp;id=0e05682d09b1372796322cd7c219a4fc637b9c5d&amp;follow=1'>more "hygiene"</a></td><td><img src='//www.gravatar.com/avatar/1032f0ca5311ccb14485f85ac0aa1619?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> Jorge Aparicio
</td><td>1</td><td><span class='deletions'>-8</span>/<span class='insertions'>+12</span></td></tr>