chore: initial database schema

.gitignore

@@ -0,0 +1,5 @@
+node_modules
+dist
+.wrangler
+.env
+.next

database/01_init.sql

@@ -0,0 +1,75 @@
+CREATE TABLE IF NOT EXISTS settings (
+    key TEXT PRIMARY KEY,
+    value TEXT NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS roles (
+    name TEXT PRIMARY KEY NOT NULL,
+    description TEXT
+);
+
+CREATE TABLE IF NOT EXISTS users (
+    email TEXT PRIMARY KEY,
+    username TEXT NOT NULL UNIQUE,
+    fullName TEXT NOT NULL,
+    mauth_token TEXT,
+    phone TEXT,
+    citizen_id TEXT,
+    role TEXT DEFAULT 'visitor',
+    avatar_url TEXT,
+    bio TEXT,
+    id_document_url TEXT,
+    id_verification_status TEXT DEFAULT 'pending',
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (role) REFERENCES roles(name) ON UPDATE CASCADE ON DELETE SET DEFAULT
+);
+
+CREATE TABLE IF NOT EXISTS posts (
+    id TEXT PRIMARY KEY,
+    user_email TEXT NOT NULL,
+    media_url TEXT NOT NULL,
+    media_type TEXT NOT NULL,
+    caption TEXT,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_email) REFERENCES users(email) ON DELETE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS likes (
+    id TEXT PRIMARY KEY,
+    user_email TEXT NOT NULL,
+    post_id TEXT NOT NULL,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_email) REFERENCES users(email) ON DELETE CASCADE,
+    FOREIGN KEY (post_id) REFERENCES posts(id) ON DELETE CASCADE,
+    UNIQUE(user_email, post_id)
+);
+
+CREATE TABLE IF NOT EXISTS comments (
+    id TEXT PRIMARY KEY,
+    user_email TEXT NOT NULL,
+    post_id TEXT NOT NULL,
+    content TEXT NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_email) REFERENCES users(email) ON DELETE CASCADE,
+    FOREIGN KEY (post_id) REFERENCES posts(id) ON DELETE CASCADE
+);
+
+CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
+CREATE INDEX IF NOT EXISTS idx_users_role ON users(role);
+CREATE INDEX IF NOT EXISTS idx_posts_user_email ON posts(user_email);
+CREATE INDEX IF NOT EXISTS idx_likes_user_email ON likes(user_email);
+CREATE INDEX IF NOT EXISTS idx_likes_post_id ON likes(post_id);
+CREATE INDEX IF NOT EXISTS idx_comments_user_email ON comments(user_email);
+CREATE INDEX IF NOT EXISTS idx_comments_post_id ON comments(post_id);
+
+INSERT OR IGNORE INTO settings (key, value) VALUES
+('site_name', 'Social Media App'),
+('site_description', 'A vibrant community social media platform.'),
+('maintenance_mode', 'false'),
+('allow_registration', 'true');
+
+INSERT OR IGNORE INTO roles (name, description) VALUES
+('visitor', 'Read-only access to public content.'),
+('member', 'Standard user with posting and interaction rights.'),
+('moderator', 'Can manage content and users.'),
+('admin', 'Full administrative access to the application.');