Описание изменений

backend/migrations/005_kanban_tables.sql

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+-- Таблица для Канбан-досок
+CREATE TABLE IF NOT EXISTS kanban_boards (
+  id SERIAL PRIMARY KEY,
+  title VARCHAR(100) NOT NULL,
+  description TEXT,
+  owner_id INTEGER REFERENCES users(id),
+  is_public BOOLEAN DEFAULT false,
+  created_at TIMESTAMP DEFAULT NOW(),
+  updated_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Таблица для колонок Канбан-доски
+CREATE TABLE IF NOT EXISTS kanban_columns (
+  id SERIAL PRIMARY KEY,
+  board_id INTEGER REFERENCES kanban_boards(id) ON DELETE CASCADE,
+  title VARCHAR(100) NOT NULL,
+  position INTEGER NOT NULL,
+  wip_limit INTEGER DEFAULT NULL, -- Лимит задач в работе (Work In Progress)
+  created_at TIMESTAMP DEFAULT NOW(),
+  updated_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Таблица для карточек (задач) Канбан-доски
+CREATE TABLE IF NOT EXISTS kanban_cards (
+  id SERIAL PRIMARY KEY,
+  column_id INTEGER REFERENCES kanban_columns(id) ON DELETE CASCADE,
+  title VARCHAR(200) NOT NULL,
+  description TEXT,
+  position INTEGER NOT NULL,
+  assigned_to INTEGER REFERENCES users(id),
+  due_date TIMESTAMP,
+  labels JSONB DEFAULT '[]',
+  created_by INTEGER REFERENCES users(id),
+  created_at TIMESTAMP DEFAULT NOW(),
+  updated_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Таблица для комментариев к карточкам
+CREATE TABLE IF NOT EXISTS kanban_comments (
+  id SERIAL PRIMARY KEY,
+  card_id INTEGER REFERENCES kanban_cards(id) ON DELETE CASCADE,
+  user_id INTEGER REFERENCES users(id),
+  content TEXT NOT NULL,
+  created_at TIMESTAMP DEFAULT NOW(),
+  updated_at TIMESTAMP DEFAULT NOW()
+);
+
+-- Таблица для доступа к доскам
+CREATE TABLE IF NOT EXISTS kanban_board_access (
+  id SERIAL PRIMARY KEY,
+  board_id INTEGER REFERENCES kanban_boards(id) ON DELETE CASCADE,
+  user_id INTEGER REFERENCES users(id),
+  access_level VARCHAR(20) NOT NULL, -- 'read', 'write', 'admin'
+  created_at TIMESTAMP DEFAULT NOW(),
+  updated_at TIMESTAMP DEFAULT NOW(),
+  UNIQUE(board_id, user_id)
+);
+
+-- Индексы для оптимизации запросов
+CREATE INDEX IF NOT EXISTS idx_kanban_columns_board_id ON kanban_columns(board_id);
+CREATE INDEX IF NOT EXISTS idx_kanban_cards_column_id ON kanban_cards(column_id);
+CREATE INDEX IF NOT EXISTS idx_kanban_comments_card_id ON kanban_comments(card_id);
+CREATE INDEX IF NOT EXISTS idx_kanban_board_access_board_id ON kanban_board_access(board_id);
+CREATE INDEX IF NOT EXISTS idx_kanban_board_access_user_id ON kanban_board_access(user_id);