feat: implement per-person dose tracking and update migration process

- Enhanced the database migration process to ensure compatibility with existing production databases, including detailed steps for adding/modifying columns.
- Updated the client-side logic to support tracking doses taken by multiple users, including changes to the data structure and UI components.
- Added new styles for per-person dose tracking to improve user experience and visual clarity.

backend/src/db/client.ts

@@ -78,6 +78,7 @@ async function runMigrations() {
       name text NOT NULL,
       generic_name text,
       taken_by text,
+      taken_by_json text NOT NULL DEFAULT '[]',
       count integer NOT NULL DEFAULT 0,
       strips integer NOT NULL DEFAULT 0,
       pack_count integer NOT NULL DEFAULT 1,
@@ -114,6 +115,7 @@ async function runMigrations() {
       high_stock_days integer NOT NULL DEFAULT 180,
       expiry_warning_days integer NOT NULL DEFAULT 90,
       language text NOT NULL DEFAULT 'en',
+      stock_calculation_mode text NOT NULL DEFAULT 'automatic',
       last_auto_email_sent text,
       last_notification_type text,
       last_notification_channel text,
@@ -137,6 +139,7 @@ async function runMigrations() {
       taken_by text NOT NULL,
       schedule_days integer NOT NULL DEFAULT 30,
       created_at integer NOT NULL DEFAULT (strftime('%s','now')),
+      expires_at integer,
       FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
     )`,
     `CREATE TABLE IF NOT EXISTS dose_tracking (
@@ -167,10 +170,13 @@ async function runMigrations() {
     { name: "intake_reminders_enabled", sql: "ALTER TABLE medications ADD COLUMN intake_reminders_enabled INTEGER NOT NULL DEFAULT 0" },
     { name: "pill_weight_mg", sql: "ALTER TABLE medications ADD COLUMN pill_weight_mg REAL" },
     { name: "taken_by", sql: "ALTER TABLE medications ADD COLUMN taken_by TEXT" },
+    { name: "taken_by_json", sql: "ALTER TABLE medications ADD COLUMN taken_by_json TEXT NOT NULL DEFAULT '[]'" },
     { name: "users_email", sql: "ALTER TABLE users ADD COLUMN email TEXT" },
     { name: "users_avatar_url", sql: "ALTER TABLE users ADD COLUMN avatar_url TEXT" },
     { name: "users_oidc_subject", sql: "ALTER TABLE users ADD COLUMN oidc_subject TEXT" },
     { name: "user_settings_expiry_warning_days", sql: "ALTER TABLE user_settings ADD COLUMN expiry_warning_days INTEGER NOT NULL DEFAULT 90" },
+    { name: "user_settings_stock_calculation_mode", sql: "ALTER TABLE user_settings ADD COLUMN stock_calculation_mode TEXT NOT NULL DEFAULT 'automatic'" },
+    { name: "share_tokens_expires_at", sql: "ALTER TABLE share_tokens ADD COLUMN expires_at INTEGER" },
   ];
 
   for (const migration of migrations) {

backend/src/db/migrate.ts

@@ -1,5 +1,7 @@
 import { createClient } from "@libsql/client";
 import dotenv from "dotenv";
+import fs from "fs";
+import path from "path";
 
 dotenv.config({ path: process.env.DOTENV_PATH || ".env" });
 
@@ -117,6 +119,52 @@ async function main() {
     await client.execute(stmt);
   }
 
+  console.log("Base tables created. Running migrations for existing databases...");
+  
+  // Run incremental migrations for existing databases
+  // These ALTER TABLE statements are safe to run multiple times (they'll fail silently if column exists)
+  const migrations = [
+    // 0003: Add image_url to medications
+    { name: "0003_add_image_url", sql: "ALTER TABLE medications ADD COLUMN image_url text" },
+    // 0004: Add expiry_date to medications
+    { name: "0004_add_expiry_date", sql: "ALTER TABLE medications ADD COLUMN expiry_date text" },
+    // 0005: Add notes to medications
+    { name: "0005_add_notes", sql: "ALTER TABLE medications ADD COLUMN notes text" },
+    // 0006: Add generic_name to medications
+    { name: "0006_add_generic_name", sql: "ALTER TABLE medications ADD COLUMN generic_name text" },
+    // 0007: Add intake_reminders_enabled to medications
+    { name: "0007_add_intake_reminders", sql: "ALTER TABLE medications ADD COLUMN intake_reminders_enabled integer NOT NULL DEFAULT 0" },
+    // 0008: Add pill_weight_mg to medications
+    { name: "0008_add_pill_weight", sql: "ALTER TABLE medications ADD COLUMN pill_weight_mg integer" },
+    // 0009: Add taken_by to medications
+    { name: "0009_add_taken_by", sql: "ALTER TABLE medications ADD COLUMN taken_by text" },
+    // 0012: Add avatar_url to users
+    { name: "0012_add_user_avatar", sql: "ALTER TABLE users ADD COLUMN avatar_url text" },
+    // 0013: Add oidc_subject to users
+    { name: "0013_add_oidc_subject", sql: "ALTER TABLE users ADD COLUMN oidc_subject text" },
+    // 0014: Add stock_calculation_mode to user_settings
+    { name: "0014_add_stock_calculation_mode", sql: "ALTER TABLE user_settings ADD COLUMN stock_calculation_mode text NOT NULL DEFAULT 'automatic'" },
+    // 0015: Add expires_at to share_tokens
+    { name: "0015_add_share_token_expiry", sql: "ALTER TABLE share_tokens ADD COLUMN expires_at integer" },
+    // 0016: Add taken_by_json to medications
+    { name: "0016_taken_by_json_array", sql: "ALTER TABLE medications ADD COLUMN taken_by_json text NOT NULL DEFAULT '[]'" },
+  ];
+
+  for (const migration of migrations) {
+    try {
+      await client.execute(migration.sql);
+      console.log(`Migration ${migration.name}: applied`);
+    } catch (err: unknown) {
+      // Ignore "duplicate column" errors - means migration was already applied
+      const errorMessage = err instanceof Error ? err.message : String(err);
+      if (errorMessage.includes("duplicate column") || errorMessage.includes("already exists")) {
+        console.log(`Migration ${migration.name}: already applied (skipped)`);
+      } else {
+        console.error(`Migration ${migration.name}: failed - ${errorMessage}`);
+      }
+    }
+  }
+
   console.log("Database setup complete!");
   process.exit(0);
 }