-- Radio Free Elsewhere database schema.
-- Apply with: mysql -u <user> -p <database> < sql/schema.sql
-- All DATETIME values are stored in UTC (includes/db.php sets the session time zone).

CREATE TABLE IF NOT EXISTS shows (
    id               INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    slug             VARCHAR(64)  NOT NULL UNIQUE,
    name             VARCHAR(255) NOT NULL,
    -- Filename in images/backgrounds/ used as the live.php header background; NULL keeps the default
    background_image VARCHAR(255) NULL,
    created_at       DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- One row per streaming session.
-- Pending (queued by cli/set_show.php): started_at IS NULL
-- Live:                                 started_at set, ended_at IS NULL
-- Ended:                                ended_at set
CREATE TABLE IF NOT EXISTS broadcasts (
    id           INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    show_id      INT UNSIGNED NULL,
    created_at   DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    started_at   DATETIME NULL,
    last_seen_at DATETIME NULL,
    ended_at     DATETIME NULL,
    INDEX (started_at),
    INDEX (ended_at),
    FOREIGN KEY (show_id) REFERENCES shows (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Tracks are cleared ten minutes after their broadcast ends.
CREATE TABLE IF NOT EXISTS played_tracks (
    id           INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    broadcast_id INT UNSIGNED NOT NULL,
    played_at    DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
    title        VARCHAR(255) NOT NULL,
    artist       VARCHAR(255) NOT NULL DEFAULT '',
    album        VARCHAR(255) NOT NULL DEFAULT '',
    art_url      VARCHAR(512) NOT NULL DEFAULT '',
    INDEX (broadcast_id, played_at),
    FOREIGN KEY (broadcast_id) REFERENCES broadcasts (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Admin accounts are created and reset from the command line with cli/create_admin.php
CREATE TABLE IF NOT EXISTS admins (
    id            INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    username      VARCHAR(64)  NOT NULL UNIQUE,
    password_hash VARCHAR(255) NOT NULL,
    created_at    DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
    last_login_at DATETIME     NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

-- Failed admin logins, used to throttle password guessing
CREATE TABLE IF NOT EXISTS login_attempts (
    id           INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    ip_address   VARCHAR(45) NOT NULL,
    attempted_at DATETIME    NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX (ip_address, attempted_at)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

INSERT IGNORE INTO shows (slug, name) VALUES
    ('omorains-pub',      'O''Morain''s Pub'),
    ('cosmoeuphoria',     'Cosmoeuphoria'),
    ('bisexual-surfers',  'Bisexual Surfers From the Twilight of Time'),
    ('the-bollocks',      'The Bollocks'),
    ('the-spin',          'The Spin');