/* Copyright (c) 2015-2018 Dovecot authors, see the included COPYING file */

#ifndef PUSH_NOTIFICATION_EVENTS_H
#define PUSH_NOTIFICATION_EVENTS_H

#include "mail-types.h"

struct mail;
struct mailbox;
struct push_notification_event_config;
struct push_notification_driver_txn;
struct push_notification_txn;
struct push_notification_txn_event;
struct push_notification_txn_mbox;
struct push_notification_txn_msg;

struct push_notification_event_vfuncs_init {
	/* Return the default config for an event (or NULL if config is
	   required). */
	void *(*default_config)(void);
};

struct push_notification_event_vfuncs_mbox {
	/* Output debug information about a message event. */
	void (*debug_mbox)(struct push_notification_txn_event *event);
	/* Called when message data is about to be free'd. */
	void (*free_mbox)(struct push_notification_txn_event *event);
};

struct push_notification_event_vfuncs_mbox_triggers {
	/* Mailbox event: create mailbox. */
	void (*create)(struct push_notification_txn *ptxn,
		       struct push_notification_event_config *ec,
		       struct push_notification_txn_mbox *mbox);
	/* Mailbox event: delete mailbox. */
	void (*delete)(struct push_notification_txn *ptxn,
		       struct push_notification_event_config *ec,
		       struct push_notification_txn_mbox *mbox);
	/* Mailbox event: rename mailbox. */
	void (*rename)(struct push_notification_txn *ptxn,
		       struct push_notification_event_config *ec,
		       struct push_notification_txn_mbox *mbox,
		       struct mailbox *old);
	/* Mailbox event: subscribe mailbox. */
	void (*subscribe)(struct push_notification_txn *ptxn,
			  struct push_notification_event_config *ec,
			  struct push_notification_txn_mbox *mbox);
	/* Mailbox event: unsubscribe mailbox. */
	void (*unsubscribe)(struct push_notification_txn *ptxn,
			    struct push_notification_event_config *ec,
			    struct push_notification_txn_mbox *mbox);
};

struct push_notification_event_vfuncs_msg {
	/* Output debug information about a message event. */
	void (*debug_msg)(struct push_notification_txn_event *event);
	/* Called when message data is about to be free'd. */
	void (*free_msg)(struct push_notification_txn_event *event);
};

struct push_notification_event_vfuncs_msg_triggers {
	/* Message event: save message (from MTA). */
	void (*save)(struct push_notification_txn *ptxn,
		     struct push_notification_event_config *ec,
		     struct push_notification_txn_msg *msg,
		     struct mail *mail);
	/* Message event: append message (from MUA). */
	void (*append)(struct push_notification_txn *ptxn,
		       struct push_notification_event_config *ec,
		       struct push_notification_txn_msg *msg,
		       struct mail *mail);
	/* Message event: expunge message. */
	void (*expunge)(struct push_notification_txn *ptxn,
			struct push_notification_event_config *ec,
			struct push_notification_txn_msg *msg);
	/* Message event: flag change. */
	void (*flagchange)(struct push_notification_txn *ptxn,
			   struct push_notification_event_config *ec,
			   struct push_notification_txn_msg *msg,
			   struct mail *mail, enum mail_flags old_flags);
	/* Message event: keyword change. */
	void (*keywordchange)(struct push_notification_txn *ptxn,
			      struct push_notification_event_config *ec,
			      struct push_notification_txn_msg *msg,
			      struct mail *mail,
			      const char *const *old_keywords);
};

struct push_notification_event_config {
	const struct push_notification_event *event;
	void *config;
};

struct push_notification_event {
	const char *name;
	struct push_notification_event_vfuncs_init init;
	struct push_notification_event_vfuncs_mbox mbox;
	struct push_notification_event_vfuncs_mbox_triggers mbox_triggers;
	struct push_notification_event_vfuncs_msg msg;
	struct push_notification_event_vfuncs_msg_triggers msg_triggers;
};

struct push_notification_txn_event {
	struct push_notification_event_config *event;
	void *data;
};

ARRAY_DEFINE_TYPE(push_notification_event,
		  const struct push_notification_event *);
extern ARRAY_TYPE(push_notification_event) push_notification_events;

ARRAY_TYPE(push_notification_event) *push_notification_get_events(void);


void push_notification_event_init(struct push_notification_driver_txn *dtxn,
				  const char *event_name, void *config);

void push_notification_event_register(
	const struct push_notification_event *event);
void push_notification_event_unregister(
	const struct push_notification_event *event);

#endif