/*
 * The vocabulary shared by every part of cgit. It pulls in the git headers
 * the renderers are written against, declares the record types they pass
 * around, and declares the single global ctx holding the parsed request, the
 * effective configuration and the repository being served. Anything that
 * belongs to one module is declared in that module's own header instead.
 */

#ifndef CGIT_H
#define CGIT_H

// git-compat-util.h sets the feature test macros that git's own headers and
// the system headers are then compiled against, so it has to come first.
#include <git-compat-util.h>

#include <archive.h>
#include <blame.h>
#include <commit.h>
#include <config.h>
#include <date.h>
#include <diff.h>
#include <diffcore.h>
#include <environment.h>
#include <graph.h>
#include <grep.h>
#include <hex.h>
#include <log-tree.h>
#include <notes.h>
#include <object-name.h>
#include <object.h>
#include <odb.h>
#include <packfile.h>
#include <path.h>
#include <refs.h>
#include <revision.h>
#include <setup.h>
#include <stdbool.h>
#include <string-list.h>
#include <strvec.h>
#include <tag.h>
#include <tree-walk.h>
#include <tree.h>
#include <url.h>
#include <utf8.h>
#include <version.h>
#include <wrapper.h>
#include <xdiff-interface.h>
#include <xdiff/xdiff.h>

// Every page cgit renders is UTF-8, so commit text in another encoding is
// converted on the way in.
#define PAGE_ENCODING "UTF-8"

#define SECONDS_PER_MINUTE 60
#define SECONDS_PER_HOUR   (SECONDS_PER_MINUTE * 60)
#define SECONDS_PER_DAY    (SECONDS_PER_HOUR * 24)
#define SECONDS_PER_WEEK   (SECONDS_PER_DAY * 7)
#define SECONDS_PER_YEAR   (SECONDS_PER_DAY * 365)
// A double, because a twelfth of a year is not a whole number of seconds.
#define SECONDS_PER_MONTH  (SECONDS_PER_YEAR / 12.0)

// The number of context lines git itself defaults to.
#define DEFAULT_DIFF_CONTEXT 3

// A tab in rendered source runs on to the next multiple of this, which is the
// width a browser picks on its own since the stylesheet sets no tab-size.
#define TAB_WIDTH 8

typedef enum {
	DIFF_UNIFIED, DIFF_SSDIFF, DIFF_STATONLY
} diff_type;

// Filters are only ever held by pointer here, so their layout stays private
// to filter.h.
struct cgit_filter;

struct cgit_repo {
	char *url;
	char *name;
	char *path;
	char *desc;
	char *head_content;
	char *owner;
	char *defbranch;
	char *module_link;
	struct string_list readme;
	char *section;
	char *clone_url;
	char *logo;
	char *logo_link;
	char *snapshot_prefix;
	int snapshots;
	int enable_blame;
	int enable_commit_graph;
	int enable_follow_links;
	int enable_gitmodules_links;
	int enable_log_filecount;
	int enable_log_linecount;
	int enable_mailmap;
	int enable_remote_branches;
	int enable_subject_links;
	int enable_commit_trailers;
	int enable_html_serving;
	int max_stats;
	int branch_sort;
	int commit_sort;
	time_t mtime;
	struct cgit_filter *about_filter;
	struct cgit_filter *commit_filter;
	struct cgit_filter *source_filter;
	struct cgit_filter *email_filter;
	struct cgit_filter *trailer_filter;
	struct string_list submodules;
	int hide;
	int ignore;
};

struct cgit_repolist {
	int length;
	int count;
	struct cgit_repo *repos;
};

struct commitinfo {
	struct commit *commit;
	char *author;
	char *author_email;
	// git's own width for a commit timestamp, which is wider than a long
	// on a 32 bit host and on Windows.
	timestamp_t author_date;
	int author_tz;
	char *committer;
	char *committer_email;
	timestamp_t committer_date;
	int committer_tz;
	char *subject;
	char *msg;
	char *msg_encoding;
};

struct taginfo {
	char *tagger;
	char *tagger_email;
	timestamp_t tagger_date;
	int tagger_tz;
	char *msg;
};

struct refinfo {
	const char *refname;
	struct object *object;
	union {
		struct taginfo *tag;
		struct commitinfo *commit;
	};
};

struct reflist {
	struct refinfo **refs;
	int alloc;
	int count;
};

struct cgit_query {
	int has_symref;
	int has_oid;
	int has_difftype;
	char *raw;
	char *repo;
	char *page;
	char *search;
	char *grep;
	char *head;
	char *oid;
	char *oid2;
	char *path;
	char *url;
	char *period;
	int ofs;
	int nohead;
	char *sort;
	int showmsg;
	diff_type difftype;
	int show_all;
	int context;
	int ignorews;
	int follow;
	char *vpath;
};

struct cgit_config {
	char *agefile;
	char *cache_root;
	char *clone_prefix;
	char *clone_url;
	char *favicon;
	char *footer;
	char *head_include;
	char *header;
	char *logo;
	char *logo_link;
	char *mimetype_file;
	char *module_link;
	char *project_list;
	struct string_list readme;
	struct string_list css;
	char *robots;
	char *root_title;
	char *root_desc;
	char *root_readme;
	char *script_name;
	char *section;
	char *repository_sort;
	// Always ends with a slash.
	char *virtual_root;
	char *strict_export;
	struct date_mode date_mode;
	int cache_size;
	int cache_dynamic_ttl;
	int cache_index_ttl;
	int cache_scan_ttl;
	int cache_static_ttl;
	int cache_summary_ttl;
	int cache_about_ttl;
	int cache_snapshot_ttl;
	int case_sensitive_sort;
	int embedded;
	int trust_scan_config;
	int enable_follow_links;
	int enable_gitmodules_links;
	int enable_header;
	int enable_http_clone;
	int enable_index_links;
	int enable_index_owner;
	int enable_blame;
	int enable_commit_graph;
	int enable_log_filecount;
	int enable_log_linecount;
	int enable_mailmap;
	int enable_plain_email;
	int enable_relative_dates;
	int enable_remote_branches;
	int enable_subject_links;
	int enable_commit_trailers;
	int enable_html_serving;
	int enable_tree_linenumbers;
	int enable_tree_group_dirs;
	int enable_git_config;
	int enable_cache_list;
	int local_time;
	int max_atom_items;
	int max_repo_count;
	int max_commit_count;
	int max_patch_count;
	int max_diff_files;
	int max_diff_lines;
	int max_msg_len;
	int max_ref_count;
	int max_repodesc_len;
	int max_blob_size;
	int max_stats;
	int renamelimit;
	int remove_suffix;
	int scan_hidden_path;
	int section_from_path;
	int snapshots;
	int section_sort;
	int summary_branches;
	int summary_log;
	int summary_tags;
	diff_type difftype;
	int branch_sort;
	int commit_sort;
	struct string_list mimetypes;
	struct string_list js;
	struct cgit_filter *about_filter;
	struct cgit_filter *commit_filter;
	struct cgit_filter *source_filter;
	struct cgit_filter *email_filter;
	struct cgit_filter *trailer_filter;
	struct cgit_filter *auth_filter;
};

struct cgit_page {
	size_t size;
	const char *mimetype;
	const char *charset;
	const char *filename;
	const char *title;
	int status;
	const char *statusmsg;
	int untrusted;
	// Set once the status line is out, when an error can only join the body.
	int headers_sent;
};

struct cgit_environment {
	const char *cgit_config;
	const char *http_host;
	const char *https;
	const char *no_http;
	const char *path_info;
	const char *query_string;
	const char *request_method;
	const char *script_name;
	const char *server_name;
	const char *server_port;
	const char *http_cookie;
	const char *http_referer;
	// A byte count, so size_t rather than a fixed width type that would
	// wrap at four gigabytes on the way in.
	size_t content_length;
	int authenticated;
};

struct cgit_context {
	struct cgit_environment env;
	struct cgit_query qry;
	struct cgit_config cfg;
	struct cgit_repo *repo;
	struct cgit_page page;
	// Set when the repository holds no commits, so the page header can drop
	// the tabs that cannot render anything.
	int empty_repo;
};

extern const char *cgit_version;

extern struct cgit_repolist cgit_repolist;
extern struct cgit_context ctx;

extern void cgit_repo_config(struct cgit_repo *repo, const char *name, const char *value);

#endif // CGIT_H