/* ui-tag.c: display a tag
 *
 * Copyright (C) 2007 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "html.h"
#include "ui-shared.h"

static void print_tag_content(char *buf)
{
	char *p;

	if (!buf)
		return;

	html("<div class='commit-subject'>");
	p = strchr(buf, '\n');
	if (p)
		*p = '\0';
	html_txt(buf);
	html("</div>");
	if (p) {
		html("<div class='commit-msg'>");
		html_txt(++p);
		html("</div>");
	}
}

void cgit_print_tag(char *revname)
{
	unsigned char sha1[20];
	struct object *obj;
	struct tag *tag;
	struct taginfo *info;

	if (get_sha1(revname, sha1)) {
		cgit_print_errorpre { line-height: 125%; }
td.linenos .normal { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
span.linenos { color: inherit; background-color: transparent; padding-left: 5px; padding-right: 5px; }
td.linenos .special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding-left: 5px; padding-right: 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
/* ui-shared.c: common web output functions
 *
 * Copyright (C) 2006 Lars Hjemli
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"

const char cgit_doctype[] =
"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\n"
"  \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";

static char *http_date(time_t t)
{
	static char day[][4] =
		{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
	static char month[][4] =
		{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
		 "Jul", "Aug", "Sep", "Oct", "Now", "Dec"};
	struct tm *tm = gmtime(&t);
	return fmt("%s, %02d %s %04d %02d:%02d:%02d GMT", day[tm->tm_wday],
		   tm->tm_mday, month[tm->tm_mon], 1900+tm->tm_year,
		   tm->tm_hour, tm->tm_min, tm->tm_sec);
}

static long ttl_seconds(long ttl)
{
	if (ttl<0)
		return 60 * 60 * 24 * 365;
	else
		return ttl * 60;
}

void cgit_print_error(char *msg)
{
	html("<div class='error'>");
	html_txt(msg);
	html("</div>\n");
}

char *cgit_rooturl()
{
	if (cgit_virtual_root)
		return fmt("%s/", cgit_virtual_root);
	else
		return cgit_script_name;
}

char *cgit_repourl(const char *reponame)
{
	if (cgit_virtual_root) {
		return fmt("%s/%s/", cgit_virtual_root, reponame);
	} else {
		return fmt("?r=%s", reponame);
	}
}

char *cgit_pageurl(const char *reponame, const char *pagename,
		   const char *query)
{
	if (cgit_virtual_root) {
		if (query)
			return fmt("%s/%s/%s/?%s", cgit_virtual_root, reponame,
				   pagename, query);
		else
			return fmt("%s/%s/%s/", cgit_virtual_root, reponame,
				   pagename);
	} else {
		if (query)
			return fmt("?r=%s&amp;p=%s&amp;%s", reponame, pagename, query);
		else
			return fmt("?r=%s&amp;p=%s", reponame, pagename);
	}
}

char *cgit_currurl()
{
	if (!cgit_virtual_root)
		return cgit_script_name;
	else if (cgit_query_page)
		return fmt("%s/%s/%s/", cgit_virtual_root, cgit_query_repo, cgit_query_page);
	else if (cgit_query_repo)
		return fmt("%s/%s/", cgit_virtual_root, cgit_query_repo);
	else
		return fmt("%s/", cgit_virtual_root);
}

static char *repolink(char *title, char *class, char *page, char *head,
		      char *path)
{
	char *delim = "?";

	html("<a");
	if (title) {
		html(" title='");
		html_attr(title);
		html("'");
	}
	if (class) {
		html(" class='");
		html_attr(class);
		html("'");
	}
	html(" href='");
	if (cgit_virtual_root) {
		html_attr(cgit_virtual_root);
		if (cgit_virtual_root[strlen(cgit_virtual_root) - 1] != '/')
			html("/");
		html_attr(cgit_repo->url);
		if (cgit_repo->url[strlen(cgit_repo->url) - 1] != '/')
			html("/");
		if (page) {
			html(page);
			html("/");
			if (path)
				html_attr(path);
		}
	} else {
		html(cgit_script_name);
		html("?url=");
		html_attr(cgit_repo->url);
		if (cgit_repo->url[strlen(cgit_repo->url) - 1] != '/')
			html("/");
		if (page) {
			html(page);
			html("/");
			if (path)
				html_attr(path);
		}
		delim = "&amp;";
	}
	if (head && strcmp(head, cgit_repo->defbranch)) {
		html(delim);
		html("h=");
		html_attr(head);
		delim = "&amp;";
	}
	return fmt("%s", delim);
}

static void reporevlink(char *page, char *name, char *title, char *class,
			char *head, char *rev, char *path)
{
	char *delim;

	delim = repolink(title, class, page, head, path);
	if (rev && strcmp(rev, cgit_query_head)) {
		html(delim);
		html("id=");
		html_attr(rev);
	}
	html("'>");
	html_txt(name);
	html("</a>");
}

void cgit_tree_link(char *name, char *title, char *class, char *head,
		    char *rev, char *path)
{
	reporevlink("tree", name, title, class, head, rev, path);
}

void cgit_log_link(char *name, char *title, char *class, char *head,
		   char *rev, char *path, int ofs)
{
	char *delim;

	delim = repolink(title, class, "log", head, path);
	if (rev && strcmp(rev, cgit_query_head)) {
		html(delim);
		html("id=");
		html_attr(rev);
		delim = "&";
	}
	if (ofs > 0) {
		html(delim);
		html("ofs=");
		htmlf("%d", ofs);
	}
	html("'>");
	html_txt(name);
	html("</a>");
}

void cgit_commit_link(char *name, char *title, char *class, char *head,
		      char *rev)
{
	if (strlen(name) > cgit_max_msg_len && cgit_max_msg_len >= 15) {
		name[cgit_max_msg_len] = '\0';
		name[cgit_max_msg_len - 1] = '.';
		name[cgit_max_msg_len - 2] = '.';
		name[cgit_max_msg_len - 3] = '.';
	}
	reporevlink("commit", name, title, class, head, rev, NULL);
}

void cgit_diff_link(char *name, char *title, char *class, char *head,
		    char *new_rev, char *old_rev, char *path)
{
	char *delim;

	delim = repolink(title, class, "diff", head, path);
	if (new_rev && strcmp(new_rev, cgit_query_head)) {
		html(delim);
		html("id=");
		html_attr(new_rev);
		delim = "&amp;";
	}
	if (old_rev) {
		html(delim);
		html("id2=");
		html_attr(old_rev);
	}
	html("'>");
	html_txt(name);
	html("</a>");
}

void cgit_print_date(time_t secs, char *format)
{
	char buf[64];
	struct tm *time;

	time = gmtime(&secs);
	strftime(buf, sizeof(buf)-1, format, time);
	html_txt(buf);
}

void cgit_print_age(time_t t, time_t max_relative, char *format)
{
	time_t now, secs;

	time(&now);
	secs = now - t;

	if (secs > max_relative && max_relative >= 0) {
		cgit_print_date(t, format);
		return;
	}

	if (secs < TM_HOUR * 2) {
		htmlf("<span class='age-mins'>%.0f min.</span>",
		      secs * 1.0 / TM_MIN);
		return;
	}
	if (secs < TM_DAY * 2) {
		htmlf("<span class='age-hours'>%.0f hours</span>",
		      secs * 1.0 / TM_HOUR);
		return;
	}
	if (secs < TM_WEEK * 2) {
		htmlf("<span class='age-days'>%.0f days</span>",
		      secs * 1.0 / TM_DAY);
		return;
	}
	if (secs < TM_MONTH * 2) {
		htmlf("<span class='age-weeks'>%.0f weeks</span>",
		      secs * 1.0 / TM_WEEK);
		return;
	}
	if (secs < TM_YEAR * 2) {
		htmlf("<span class='age-months'>%.0f months</span>",
		      secs * 1.0 / TM_MONTH);
		return;
	}
	htmlf("<span class='age-years'>%.0f years</span>",
	      secs * 1.0 / TM_YEAR);
}

void cgit_print_docstart(char *title, struct cacheitem *item)
{
	html("Content-Type: text/html; charset=utf-8\n");
	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
					 ttl_seconds(item->ttl)));
	html("\n");
	html(cgit_doctype);
	html("<html>\n");
	html("<head>\n");
	html("<title>");
	html_txt(title);
	html("</title>\n");
	htmlf("<meta name='generator' content='cgit v%s'/>\n", cgit_version);
	html("<link rel='stylesheet' type='text/css' href='");
	html_attr(cgit_css);
	html("'/>\n");
	html("</head>\n");
	html("<body>\n");
}

void cgit_print_docend()
{
	html("</td></tr></table>");
	html("</body>\n</html>\n");
}

void cgit_print_pageheader(char *title, int show_search)
{
	html("<table id='layout'>");
	html("<tr><td id='header'><a href='");
	html_attr(cgit_rooturl());
	html("'>");
	html_txt(cgit_root_title);
	html("</a></td><td id='logo'>");
	html("<a href='");
	html_attr(cgit_logo_link);
	htmlf("'><img src='%s' alt='logo'/></a>", cgit_logo);
	html("</td></tr>");
	html("<tr><td id='crumb'>");
	if (cgit_query_repo) {
		html_txt(cgit_repo->name);
		html(" (");
		html_txt(cgit_query_head);
		html(") : &nbsp;");
		reporevlink(NULL, "summary", NULL, NULL, cgit_query_head,
			    NULL, NULL);
		html(" ");
		cgit_log_link("log", NULL, NULL, cgit_query_head,
			      cgit_query_sha1, cgit_query_path, 0);
		html(" ");
		cgit_tree_link("tree", NULL, NULL, cgit_query_head,
			       cgit_query_sha1, NULL);
		html(" ");
		cgit_commit_link("commit", NULL, NULL, cgit_query_head,
			      cgit_query_sha1);
		html(" ");
		cgit_diff_link("diff", NULL, NULL, cgit_query_head,
			       cgit_query_sha1, cgit_query_sha2,
			       cgit_query_path);
	} else {
		html_txt("Index of repositories");
	}
	html("</td>");
	html("<td id='search'>");
	if (show_search) {
		html("<form method='get' action='");
		html_attr(cgit_currurl());
		html("'>");
		if (!cgit_virtual_root) {
			if (cgit_query_repo)
				html_hidden("r", cgit_query_repo);
			if (cgit_query_page)
				html_hidden("p", cgit_query_page);
		}
		if (cgit_query_head)
			html_hidden("h", cgit_query_head);
		if (cgit_query_sha1)
			html_hidden("id", cgit_query_sha1);
		if (cgit_query_sha2)
			html_hidden("id2", cgit_query_sha2);
		html("<input type='text' name='q' value='");
		html_attr(cgit_query_search);
		html("'/></form>");
	}
	html("</td></tr>");
	html("<tr><td id='content' colspan='2'>");
}

void cgit_print_snapshot_start(const char *mimetype, const char *filename,
			       struct cacheitem *item)
{
	htmlf("Content-Type: %s\n", mimetype);
	htmlf("Content-Disposition: inline; filename=\"%s\"\n", filename);
	htmlf("Last-Modified: %s\n", http_date(item->st.st_mtime));
	htmlf("Expires: %s\n", http_date(item->st.st_mtime +
					 ttl_seconds(item->ttl)));
	html("\n");
}