--creating system table
CREATE TABLE IF NOT EXISTS system (
    `key` VARCHAR(32) PRIMARY KEY,
    `value` TEXT
);

--creating roles table
CREATE TABLE IF NOT EXISTS roles (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `name` VARCHAR(256) UNIQUE NOT NULL,
    `color` INTEGER UNSIGNED DEFAULT 0
);

--creating accounts table
CREATE TABLE IF NOT EXISTS accounts (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `login` VARCHAR(256) UNIQUE NOT NULL,
    `nick` VARCHAR(256),
    `type` INTEGER UNSIGNED NOT NULL,
    `password` VARCHAR(128),
    `created` TIMESTAMP DEFAULT UTC_TIMESTAMP()
);

--creating role bindings table
CREATE TABLE IF NOT EXISTS roleBindings (
    `account` INTEGER UNSIGNED NOT NULL,
    `role` INTEGER UNSIGNED NOT NULL,

    PRIMARY KEY (account, role),
    FOREIGN KEY (account) REFERENCES accounts(id),
    FOREIGN KEY (role) REFERENCES roles(id)
);

--creating sessings table
CREATE TABLE IF NOT EXISTS sessions (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `owner` INTEGER UNSIGNED NOT NULL,
    `started` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
    `latest` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
    `access` CHAR(32) NOT NULL UNIQUE,
    `renew` CHAR(32),
    `persist` BOOLEAN NOT NULL,
    `device` TEXT,

    FOREIGN KEY (owner) REFERENCES accounts(id)
);

--creating currencies table
CREATE TABLE IF NOT EXISTS currencies (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `code` VARCHAR(16) NOT NULL UNIQUE,
    `title` VARCHAR(256),
    `manual` BOOLEAN NOT NULL,
    `added` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
    `type` INTEGER UNSIGNED NOT NULL,
    `value` DECIMAL (20, 5) NOT NULL,
    `source` TEXT,
    `description` TEXT,
    `icon` VARCHAR(256),

    INDEX manual_idx (manual)
);

--creating assests table
CREATE TABLE IF NOT EXISTS assets (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `owner` INTEGER UNSIGNED NOT NULL,
    `currency` INTEGER UNSIGNED NOT NULL,
    `title` VARCHAR(256),
    `icon` VARCHAR(256),
    `color` INTEGER UNSIGNED DEFAULT 0,
    `balance` DECIMAL (20, 5) DEFAULT 0,
    `type` INTEGER UNSIGNED NOT NULL,
    `archived` BOOLEAN DEFAULT FALSE,
    `created` TIMESTAMP DEFAULT UTC_TIMESTAMP(),

    INDEX owner_idx (owner),
    INDEX archived_idx (archived),

    FOREIGN KEY (owner) REFERENCES accounts(id),
    FOREIGN KEY (currency) REFERENCES currencies(id)
);

--creating parties table
CREATE TABLE IF NOT EXISTS parties (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `title` VARCHAR(256) NOT NULL UNIQUE
);

--creating transactions table
CREATE TABLE IF NOT EXISTS transactions (
    `id` INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    `initiator` INTEGER UNSIGNED NOT NULL,
    `type` INTEGER UNSIGNED NOT NULL,
    `asset` INTEGER UNSIGNED NOT NULL,
    `parent` INTEGER UNSIGNED,
    `value` DECIMAL (20, 5) NOT NULL,
    `state` INTEGER UNSIGNED DEFAULT 0,
    `modified` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
    `performed` TIMESTAMP DEFAULT UTC_TIMESTAMP(),
    `party` INTEGER UNSIGNED,
    `notes` TEXT,

    INDEX initiator_idx (initiator),
    INDEX parent_idx (parent),
    INDEX asset_idx (asset),
    INDEX performed_idx (performed),
    INDEX modified_idx (modified),
    INDEX party_idx (party),

    FOREIGN KEY (initiator) REFERENCES accounts(id),
    FOREIGN KEY (asset) REFERENCES assets(id),
    FOREIGN KEY (parent) REFERENCES transactions(id),
    FOREIGN KEY (party) REFERENCES parties(id)
);

--creating defailt roles
INSERT IGNORE INTO
roles  (`name`)
VALUES ('root'),
       ('default');

--inserting initial version
INSERT IGNORE INTO
system (`key`, `value`)
VALUES ('version', '0');

--recording initial time
INSERT IGNORE INTO
system (`key`, `value`)
VALUES ('created', UTC_TIMESTAMP());

--creating default currencies
INSERT IGNORE INTO
currencies (`code`, `title`,               `manual`, `description`,  `type`, `value`, `icon`)
VALUES     ('USD',  'United States Dollar', TRUE,    'Base currency', 1,      1,      'currency-usd');