SET NAMES utf8;
SET time_zone = '+08:00';
SET foreign_key_checks = 0;
SET sql_mode = 'NO_AUTO_VALUE_ON_ZERO';

SET NAMES utf8mb4;

DROP TABLE IF EXISTS `comment`;
CREATE TABLE `comment` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `pid` int(11) unsigned NOT NULL,
  `content` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `username` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
  `time` datetime NOT NULL,
  `modified` datetime DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `pid` (`pid`),
  KEY `username` (`username`),
  CONSTRAINT `comment_ibfk_1` FOREIGN KEY (`pid`) REFERENCES `post` (`pid`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `comment_ibfk_3` FOREIGN KEY (`username`) REFERENCES `user` (`username`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;


DELIMITER ;;

CREATE TRIGGER `comment_add` AFTER INSERT ON `comment` FOR EACH ROW
BEGIN
UPDATE `post` SET `comment` = `comment` +1 WHERE `pid` = NEW.pid;
END;;

CREATE TRIGGER `comment_del` AFTER DELETE ON `comment` FOR EACH ROW
BEGIN
UPDATE `post` SET `comment` = `comment` -1 WHERE `pid` = OLD.pid;
END;;

DELIMITER ;

DROP TABLE IF EXISTS `like`;
CREATE TABLE `like` (
  `username` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
  `pid` int(11) unsigned NOT NULL,
  KEY `pid` (`pid`),
  KEY `username` (`username`),
  CONSTRAINT `like_ibfk_1` FOREIGN KEY (`pid`) REFERENCES `post` (`pid`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `like_ibfk_2` FOREIGN KEY (`username`) REFERENCES `user` (`username`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;


DELIMITER ;;

CREATE TRIGGER `like_add` AFTER INSERT ON `like` FOR EACH ROW
BEGIN
UPDATE `post` SET `like` = `like` +1 WHERE `pid` = NEW.pid;
END;;

CREATE TRIGGER `like_del` AFTER DELETE ON `like` FOR EACH ROW
BEGIN
UPDATE `post` SET `like` = `like` -1 WHERE `pid` = OLD.pid;
END;;

DELIMITER ;

DROP TABLE IF EXISTS `notification`;
CREATE TABLE `notification` (
  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `username` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
  `message` text CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `type` varchar(30) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  `time` datetime NOT NULL,
  `read` tinyint(1) NOT NULL DEFAULT '0',
  `url` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  PRIMARY KEY (`id`),
  KEY `username` (`username`),
  CONSTRAINT `notification_ibfk_1` FOREIGN KEY (`username`) REFERENCES `user` (`username`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;


DROP TABLE IF EXISTS `post`;
CREATE TABLE `post` (
  `pid` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `title` text COLLATE utf8mb4_unicode_ci NOT NULL,
  `content` longtext COLLATE utf8mb4_unicode_ci NOT NULL,
  `time` datetime NOT NULL,
  `username` varchar(30) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
  `like` int(11) unsigned NOT NULL DEFAULT '0',
  `comment` int(11) unsigned NOT NULL DEFAULT '0',
  PRIMARY KEY (`pid`),
  KEY `username` (`username`),
  CONSTRAINT `post_ibfk_1` FOREIGN KEY (`username`) REFERENCES `user` (`username`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;


DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
  `email` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `muted` tinyint(1) NOT NULL DEFAULT '0',
  `level` tinyint(1) NOT NULL DEFAULT '0',
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(30) COLLATE utf8_unicode_ci NOT NULL,
  `pwd` varchar(128) COLLATE utf8_unicode_ci NOT NULL,
  `name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL,
  PRIMARY KEY (`id`),
  KEY `username` (`username`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;