Initial commit

migrations/001_initial_schema.sql

@@ -0,0 +1,67 @@
+-- Migration 001: Initial Schema
+-- Creates the core tables for the weight tracker app
+
+-- Users table
+CREATE TABLE IF NOT EXISTS users (
+    id SERIAL PRIMARY KEY,
+    username VARCHAR(50) UNIQUE NOT NULL,
+    password_hash VARCHAR(255) NOT NULL,
+    display_name VARCHAR(100),
+    height_cm DECIMAL(5,1),
+    age INTEGER,
+    gender VARCHAR(20),
+    goal_weight_kg DECIMAL(5,1),
+    starting_weight_kg DECIMAL(5,1),
+    created_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Check-ins table
+CREATE TABLE IF NOT EXISTS checkins (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    weight_kg DECIMAL(5,1) NOT NULL,
+    bmi DECIMAL(4,1),
+    notes TEXT,
+    checked_in_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Milestones table
+CREATE TABLE IF NOT EXISTS milestones (
+    id SERIAL PRIMARY KEY,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    milestone_key VARCHAR(50) NOT NULL,
+    achieved_at TIMESTAMP DEFAULT NOW(),
+    UNIQUE(user_id, milestone_key)
+);
+
+-- Challenges table
+CREATE TABLE IF NOT EXISTS challenges (
+    id SERIAL PRIMARY KEY,
+    title VARCHAR(200) NOT NULL,
+    description TEXT,
+    target_type VARCHAR(30) NOT NULL,
+    target_value DECIMAL(8,2) NOT NULL,
+    start_date DATE NOT NULL,
+    end_date DATE NOT NULL,
+    created_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Challenge participants
+CREATE TABLE IF NOT EXISTS challenge_participants (
+    id SERIAL PRIMARY KEY,
+    challenge_id INTEGER REFERENCES challenges(id) ON DELETE CASCADE,
+    user_id INTEGER REFERENCES users(id) ON DELETE CASCADE,
+    completed BOOLEAN DEFAULT FALSE,
+    completed_at TIMESTAMP,
+    UNIQUE(challenge_id, user_id)
+);
+
+-- Indexes
+CREATE INDEX IF NOT EXISTS idx_checkins_user_date ON checkins(user_id, checked_in_at DESC);
+CREATE INDEX IF NOT EXISTS idx_milestones_user ON milestones(user_id);
+
+-- Migrations tracking table
+CREATE TABLE IF NOT EXISTS schema_migrations (
+    version INTEGER PRIMARY KEY,
+    applied_at TIMESTAMP DEFAULT NOW()
+);