/*
 * The page furniture and the link builders every renderer shares. A page
 * handler renders its own body and calls in here for all that surrounds it,
 * which is the HTTP headers, the document head and footer, the header block
 * with its tabs and search form, the error page, and an anchor to any other
 * cgit page. Whether a site addresses a request as a path below a virtual root
 * or as a query string is settled behind these calls, so that nothing else has
 * to know which of the two it is looking at.
 */

#ifndef CGIT_UI_SHARED_H
#define CGIT_UI_SHARED_H

#include "cgit.h"
extern const char *cgit_httpscheme(void);
extern char *cgit_hosturl(void);

/*
 * The URL of the request being answered, which cgit_currentfullurl gives with
 * the query string on the end as well, minus the url argument that the path
 * was taken from.
 */
extern char *cgit_currenturl(void);
extern char *cgit_currentfullurl(void);
extern const char *cgit_loginurl(void);
extern char *cgit_repourl(const char *reponame);
extern char *cgit_fileurl(const char *reponame, const char *pagename,
			  const char *filename, const char *query);
extern char *cgit_pageurl(const char *reponame, const char *pagename,
			  const char *query);

// Call fn once for every URL this repository can be cloned from.
extern void cgit_add_clone_urls(void (*fn)(const char *));

/*
 * Each of these writes one anchor to the page and nothing around it, with name
 * as the text a reader sees. A NULL title or class leaves that attribute out,
 * and what follows them is the state the target page should open in.
 */
extern void cgit_index_link(const char *name, const char *title,
			    const char *class, const char *pattern,
			    const char *sort, int ofs, int always_root);
extern void cgit_summary_link(const char *name, const char *title,
			      const char *class, const char *head);
extern void cgit_tag_link(const char *name, const char *title,
			  const char *class, const char *tag);
extern void cgit_tree_link(const char *name, const char *title,
			   const char *class, const char *head,
			   const char *rev, const char *path);
extern void cgit_plain_link(const char *name, const char *title,
			    const char *class, const char *head,
			    const char *rev, const char *path);
extern void cgit_blame_link(const char *name, const char *title,
			    const char *class, const char *head,
			    const char *rev, const char *path);
extern void cgit_log_link(const char *name, const char *title,
			  const char *class, const char *head, const char *rev,
			  const char *path, int ofs, const char *grep,
			  const char *pattern, int showmsg, int follow);
extern void cgit_commit_link(const char *name, const char *title,
			     const char *class, const char *head,
			     const char *rev, const char *path);
extern void cgit_patch_link(const char *name, const char *title,
			    const char *class, const char *head,
			    const char *rev, const char *path);
extern void cgit_refs_link(const char *name, const char *title,
			   const char *class, const char *head,
			   const char *rev, const char *path);
extern void cgit_diff_link(const char *name, const char *title,
			   const char *class, const char *head,
			   const char *new_rev, const char *old_rev,
			   const char *path);
extern void cgit_stats_link(const char *name, const char *title,
			    const char *class, const char *head,
			    const char *path);
extern void cgit_object_link(struct object *obj);

extern void cgit_submodule_link(const char *class, char *path,
				const char *rev);

extern void cgit_print_layout_start(void);
extern void cgit_print_layout_end(void);

__attribute__((format (printf,1,2)))
extern void cgit_print_error(const char *fmt, ...);
extern struct date_mode cgit_date_mode(enum date_mode_type type);

/*
 * Print the time t, which was recorded in the timezone tz, as an age. An age
 * further back than max_relative is given as a calendar date instead, and a
 * negative max_relative stays relative however old it is. A site that turns
 * relative dates off gets the date either way.
 */
extern void cgit_print_age(time_t t, int tz, time_t max_relative);
extern void cgit_print_http_headers(void);
extern void cgit_redirect(const char *url, bool permanent);
extern void cgit_print_docstart(void);
extern void cgit_print_docend(void);
__attribute__((format (printf,3,4)))
extern void cgit_print_error_page(int code, const char *msg, const char *fmt,
				  ...);
extern void cgit_vprint_error_page(int code, const char *msg, const char *fmt,
				   va_list ap);
extern void cgit_print_pageheader(void);
extern void cgit_print_filemode(unsigned short mode);
extern void cgit_print_snapshot_links(const struct cgit_repo *repo,
				      const char *ref, const char *separator);

// The name a snapshot of this repository is downloaded under, which is the
// configured prefix or the last component of the repository URL.
extern const char *cgit_snapshot_prefix(const struct cgit_repo *repo);

/*
 * Carry the current request into a form as hidden inputs, so that submitting
 * it changes only what the form itself asks about. The branch and the search
 * terms are carried only when the caller asks for them, since a form with a
 * field of its own for either would otherwise submit that name twice.
 */
extern void cgit_add_hidden_formfields(int incl_head, int incl_search,
				       const char *page);

// Put path in front of the page title, its last component first.
extern void cgit_set_title_from_path(const char *path);
#endif // CGIT_UI_SHARED_H