/*
 * The repository summary page and the about page. The summary stacks the
 * branch list, the tag list and the head of the log into one table and ends
 * with the clone urls, reusing the listings ui-refs.c and ui-log.c draw
 * elsewhere. The about page renders the readme that config parsing picked for
 * the repository, either through the configured about filter or escaped as
 * plain text.
 */

#include "cgit.h"
#include "filter.h"
#include "html.h"
#include "shared.h"
#include "ui-blob.h"
#include "ui-log.h"
#include "ui-refs.h"
#include "ui-shared.h"
#include "ui-summary.h"

// Age, commit message and author, the three columns a log row always has.
// ui-log.c adds one more for each of the two optional counts, and the rows
// this page stretches across the table have to match that width.
#define LOG_BASE_COLUMNS 3

static int clone_urls_printed;

static int log_columns(void)
{
	int columns = LOG_BASE_COLUMNS;

	if (ctx.repo->enable_log_filecount)
		columns++;
	if (ctx.repo->enable_log_linecount)
		columns++;
	return columns;
}

static void print_clone_url(const char *url)
{
	int columns = log_columns();

	// cgit_add_clone_urls may call back no times at all, so the heading
	// waits for a first url rather than being printed ahead of the walk.
	if (clone_urls_printed++ == 0) {
		html("<tbody class='clone'>\n");
		htmlf("<tr class='nohover'><th colspan='%d' class='left' scope='col'>Clone</th></tr>\n",
			columns);
	}

	cgit_print_clone_row(url, columns);
}

void cgit_print_summary(void)
{
	cgit_print_layout_start();
	// One table, so the columns line up across the sections, each of
	// which is a body of its own.
	html("<table class='list summary' aria-label='Summary'>\n");
	cgit_print_branches(ctx.cfg.summary_branches);
	cgit_print_tags(ctx.cfg.summary_tags);
	if (ctx.cfg.summary_log > 0)
		cgit_print_log(ctx.qry.head, 0, ctx.cfg.summary_log, NULL, NULL, NULL, 0, 0, 0);
	clone_urls_printed = 0;
	cgit_add_clone_urls(print_clone_url);
	if (clone_urls_printed)
		html("</tbody>\n");
	html("</table>\n");
	cgit_print_layout_end();
}

void cgit_print_repo_readme(void)
{
	char *filename, *ref;

	cgit_print_layout_start();
	filename = ctx.repo->readme.items[0].string;
	ref = ctx.repo->readme.items[0].util;

	html("<div id='about'>");
	if (!ctx.repo->about_filter) {
		// With no about-filter there is nothing to turn the readme
		// into safe HTML, so it is escaped rather than served raw.
		html("<pre class='plaintext'>");
		if (ref) {
			cgit_print_file(filename, ref, 1, 1);
		} else {
			struct strbuf sb = STRBUF_INIT;
			if (strbuf_read_file(&sb, filename, 0) >= 0)
				html_txt(sb.buf);
			strbuf_release(&sb);
		}
		html("</pre>");
	} else {
		struct strbuf tree_base = STRBUF_INIT, tree_query = STRBUF_INIT;

		// A tracked readme's links lead into the tree at the ref it was
		// read from, while one on disk has no tree to lead into.
		if (ref)
			cgit_tree_url(ref, &tree_base, &tree_query);
		// The filter is what makes the source safe here, so it is fed
		// through unescaped.
		cgit_open_filter(ctx.repo->about_filter, filename, tree_base.buf, tree_query.buf);
		if (ref)
			cgit_print_file(filename, ref, 1, 0);
		else
			html_include(filename);
		cgit_close_filter(ctx.repo->about_filter);
		strbuf_release(&tree_base);
		strbuf_release(&tree_query);
	}
	html("</div>");
	cgit_print_layout_end();
}