Sửa lỗi tái cấu trúc thư mục và khai báo import

backend/prisma/schema.sql

@@ -0,0 +1,77 @@
+-- Kích hoạt extension PostGIS để xử lý tọa độ địa lý
+CREATE EXTENSION IF NOT EXISTS postgis;
+
+-- 3.1. Users
+CREATE TABLE users (
+    id SERIAL PRIMARY KEY,
+    email VARCHAR(255) UNIQUE NOT NULL,
+    password_hash TEXT NOT NULL,
+    name VARCHAR(100),
+    avatar TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- 3.2. Tours & Members
+CREATE TABLE tours (
+    id SERIAL PRIMARY KEY,
+    title VARCHAR(255) NOT NULL,
+    start_date DATE,
+    end_date DATE,
+    creator_id INTEGER REFERENCES users(id),
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TYPE member_role AS ENUM ('OWNER', 'EDITOR', 'MEMBER_PLAN_ONLY', 'MEMBER_PHOTO_ONLY', 'VIEWER_EXTERNAL');
+
+CREATE TABLE tour_members (
+    tour_id INTEGER REFERENCES tours(id),
+    user_id INTEGER REFERENCES users(id),
+    role member_role DEFAULT 'MEMBER_PLAN_ONLY',
+    PRIMARY KEY (tour_id, user_id)
+);
+
+-- 3.3. Itinerary & Map
+CREATE TABLE legs (
+    id SERIAL PRIMARY KEY,
+    tour_id INTEGER REFERENCES tours(id),
+    sequence_number INTEGER NOT NULL,
+    notes TEXT
+);
+
+CREATE TABLE places (
+    id SERIAL PRIMARY KEY,
+    leg_id INTEGER REFERENCES legs(id),
+    name VARCHAR(255),
+    address TEXT,
+    geom GEOMETRY(Point, 4326), -- PostGIS coordinates
+    sequence_in_leg INTEGER,
+    arrival_time TIMESTAMP,
+    departure_time TIMESTAMP
+);
+
+-- 3.4. Expenses
+CREATE TYPE expense_category AS ENUM ('LODGING', 'DINING', 'TRANSPORT', 'OTHER');
+
+CREATE TABLE expenses (
+    id SERIAL PRIMARY KEY,
+    leg_id INTEGER REFERENCES legs(id),
+    place_id INTEGER REFERENCES places(id),
+    category expense_category,
+    amount DECIMAL(15, 2) NOT NULL,
+    currency VARCHAR(10) DEFAULT 'VND',
+    description TEXT
+);
+
+-- 3.5. Tasks
+CREATE TYPE trigger_type AS ENUM ('AUTO_BY_TIME', 'MANUAL_BY_USER');
+
+CREATE TABLE tasks (
+    id SERIAL PRIMARY KEY,
+    tour_id INTEGER REFERENCES tours(id),
+    leg_id INTEGER REFERENCES legs(id),
+    title VARCHAR(255),
+    planned_timestamp TIMESTAMP,
+    is_completed BOOLEAN DEFAULT FALSE,
+    completed_at TIMESTAMP,
+    trigger_type trigger_type DEFAULT 'MANUAL_BY_USER'
+);