Add D1 migrations and migrate.sh for notifications tables

migrate.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+set -euo pipefail
+echo "Applying D1 migrations to education_db..."
+npx --yes wrangler d1 migrations apply education_db --remote
+echo "Done."

migrations/0001_initial_schema.sql

@@ -0,0 +1,81 @@
+-- Migration 0001: Initial schema
+
+CREATE TABLE IF NOT EXISTS users (
+    id            TEXT PRIMARY KEY,
+    username_hash TEXT NOT NULL UNIQUE,
+    email_hash    TEXT NOT NULL UNIQUE,
+    name          TEXT NOT NULL,
+    username      TEXT NOT NULL,
+    email         TEXT NOT NULL,
+    password_hash TEXT NOT NULL,
+    role          TEXT NOT NULL,
+    created_at    TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS activities (
+    id            TEXT PRIMARY KEY,
+    title         TEXT NOT NULL,
+    description   TEXT,
+    type          TEXT NOT NULL DEFAULT 'course',
+    format        TEXT NOT NULL DEFAULT 'self_paced',
+    schedule_type TEXT NOT NULL DEFAULT 'ongoing',
+    host_id       TEXT NOT NULL,
+    created_at    TEXT NOT NULL DEFAULT (datetime('now')),
+    FOREIGN KEY (host_id) REFERENCES users(id)
+);
+
+CREATE TABLE IF NOT EXISTS sessions (
+    id          TEXT PRIMARY KEY,
+    activity_id TEXT NOT NULL,
+    title       TEXT,
+    description TEXT,
+    start_time  TEXT,
+    end_time    TEXT,
+    location    TEXT,
+    created_at  TEXT NOT NULL DEFAULT (datetime('now')),
+    FOREIGN KEY (activity_id) REFERENCES activities(id)
+);
+
+CREATE TABLE IF NOT EXISTS enrollments (
+    id          TEXT PRIMARY KEY,
+    activity_id TEXT NOT NULL,
+    user_id     TEXT NOT NULL,
+    role        TEXT NOT NULL DEFAULT 'participant',
+    status      TEXT NOT NULL DEFAULT 'active',
+    created_at  TEXT NOT NULL DEFAULT (datetime('now')),
+    UNIQUE (activity_id, user_id),
+    FOREIGN KEY (activity_id) REFERENCES activities(id),
+    FOREIGN KEY (user_id)     REFERENCES users(id)
+);
+
+CREATE TABLE IF NOT EXISTS session_attendance (
+    id         TEXT PRIMARY KEY,
+    session_id TEXT NOT NULL,
+    user_id    TEXT NOT NULL,
+    status     TEXT NOT NULL DEFAULT 'registered',
+    created_at TEXT NOT NULL DEFAULT (datetime('now')),
+    UNIQUE (session_id, user_id),
+    FOREIGN KEY (session_id) REFERENCES sessions(id),
+    FOREIGN KEY (user_id)    REFERENCES users(id)
+);
+
+CREATE TABLE IF NOT EXISTS tags (
+    id   TEXT PRIMARY KEY,
+    name TEXT UNIQUE NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS activity_tags (
+    activity_id TEXT NOT NULL,
+    tag_id      TEXT NOT NULL,
+    PRIMARY KEY (activity_id, tag_id),
+    FOREIGN KEY (activity_id) REFERENCES activities(id),
+    FOREIGN KEY (tag_id)      REFERENCES tags(id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_activities_host         ON activities(host_id);
+CREATE INDEX IF NOT EXISTS idx_enrollments_activity    ON enrollments(activity_id);
+CREATE INDEX IF NOT EXISTS idx_enrollments_user        ON enrollments(user_id);
+CREATE INDEX IF NOT EXISTS idx_sessions_activity       ON sessions(activity_id);
+CREATE INDEX IF NOT EXISTS idx_sa_session              ON session_attendance(session_id);
+CREATE INDEX IF NOT EXISTS idx_sa_user                 ON session_attendance(user_id);
+CREATE INDEX IF NOT EXISTS idx_at_activity             ON activity_tags(activity_id);

migrations/0002_add_notifications.sql

@@ -0,0 +1,26 @@
+-- Migration 0002: Add notifications and notification_preferences tables
+
+CREATE TABLE IF NOT EXISTS notifications (
+    id         TEXT PRIMARY KEY,
+    user_id    TEXT NOT NULL,
+    type       TEXT NOT NULL,
+    title      TEXT NOT NULL,
+    message    TEXT NOT NULL,
+    is_read    INTEGER NOT NULL DEFAULT 0,
+    related_id TEXT,
+    created_at TEXT NOT NULL DEFAULT (datetime('now')),
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+CREATE INDEX IF NOT EXISTS idx_notif_user    ON notifications(user_id);
+CREATE INDEX IF NOT EXISTS idx_notif_unread  ON notifications(user_id, is_read);
+CREATE INDEX IF NOT EXISTS idx_notif_created ON notifications(user_id, created_at DESC);
+
+CREATE TABLE IF NOT EXISTS notification_preferences (
+    user_id           TEXT PRIMARY KEY,
+    enrollment_notify INTEGER NOT NULL DEFAULT 1,
+    session_notify    INTEGER NOT NULL DEFAULT 1,
+    system_notify     INTEGER NOT NULL DEFAULT 1,
+    updated_at        TEXT NOT NULL DEFAULT (datetime('now')),
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);

wrangler.toml

@@ -16,6 +16,7 @@ not_found_handling = "404-page"
 binding = "DB"
 database_name = "education_db"
 database_id = "a0021f2e-a8cc-4e20-8910-3c7290ba47a6"
+migrations_dir = "migrations"
 
 
 # Virtual Classroom Durable Object
@@ -49,4 +50,7 @@ invocation_logs = true
 [observability.traces]
 enabled = false
 persist = true
-head_sampling_rate = 1
+head_sampling_rate = 1
+
+[build]
+command = "bash migrate.sh"