/* ui-blame.c: functions for blame output
 *
 * Copyright (C) 2006-2017 cgit Development Team <cgit@lists.zx2c4.com>
 *
 * Licensed under GNU General Public License v2
 *   (see COPYING for full license text)
 */

#include "cgit.h"
#include "ui-blame.h"
#include "html.h"
#include "ui-shared.h"
#include "argv-array.h"
#include "blame.h"


static char *emit_suspect_detail(struct blame_origin *suspect)
{
	struct commitinfo *info;
	struct strbuf detail = STRBUF_INIT;

	info = cgit_parse_commit(suspect->commit);

	strbuf_addf(&detail, "author  %s", info->author);
	if (!ctx.cfg.noplainemail)
		strbuf_addf(&detail, " %s", info->author_email);
	strbuf_addf(&detail, "  %s\n",
		    show_date(info->author_date, info->author_tz,
				    cgit_date_mode(DATE_ISO8601)));

	strbuf_addf(&detail, "committer  %s", info->committer);
	if (!ctx.cfg.noplainemail)
		strbuf_addf(&detail, " %s", info->committer_email);
	strbuf_addf(&detail, "  %s\n\n",
		    show_date(info->committer_date, info->committer_tz,
				    cgit_date_mode(DATE_ISO8601)));

	strbuf_addstr(&detail, info->subject);

	cgit_free_commitinfo(info);
	return strbuf_detach(&detail, NULL);
}

static void emit_blame_entry_hash(struct blame_entry *ent)
{
	struct blame_origin *suspect = ent->suspect;
	struct object_id *oid = &suspect->commit->object.oid;
	unsigned long line = 0;

	char *detail = emit_suspect_detail(suspect);
	html("<span class='sha1'>");
	cgit_commit_link(find_unique_abbrev(oid, DEFAULT_ABBREV), detail,
			 NULL, ctx.qry.head, oid_to_hex(oid), suspect->path);
	html("</span>");
	free(detail);

	while (line++ < ent->num_lines)
		html("\n");
}

static void emit_blame_entry_linenumber(struct blame_entry *ent)
{
	const char *numberfmt = "<a id='n%1$d' href='#n%1$d'>%1$d</a>\n";

	unsigned long lineno = ent->lno;
	while (lineno < ent->lno + ent->num_lines)
		htmlf(numberfmt, ++lineno);
}

static void emit_blame_entry_line_background(struct blame_scoreboard *sb,
					     struct blame_entry *ent)
{
	unsigned long line;
	size_t len, maxlen = 2;
	const char* pos, *endpos;

	for (line = ent->lno; line < ent->lno + ent->num_lines; line++) {
		html("\n");
		pos = blame_nth_line(sb, line);
		endpos = blame_nth_line(sb, line + 1);
		len = 0;
		while (pos < endpos) {
			len++;
			if (*pos++ == '\t')
				len = (len + 7) & ~7;
		}
		if (len > maxlen)
			maxlen = len;
	}

	for (len = 0; len < maxlen - 1; len++)
		html(" ");
}

struct walk_tree_context {
	char *curr_rev;
	int match_baselen;
	int state;
};

static void print_object(const struct object_id *oid, const char *path,
			 const char *basename, const char *rev)
{
	enum object_type type;
	char *buf;
	unsigned long size;
	struct argv_array rev_argv = ARGV_ARRAY_INIT;
	struct rev_info revs;
	struct blame_scoreboard sb;
	struct blame_origin *o;
	struct blame_entry *ent = NULL;

	type = oid_object_info(the_repository, oid, &size);
	if (type == OBJ_BAD) {
		cgit_print_error_page(404, "Not found", "Bad object name: %s",
				      oid_to_hex(oid));
		return;
	}

	buf = read_object_<style>pre { line-height: 125%; }
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