33 lines
1.3 KiB
MySQL
33 lines
1.3 KiB
MySQL
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-- Migration: Add Messaging System
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-- Creates tables for customer-admin conversations and messages
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-- Conversations table
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CREATE TABLE IF NOT EXISTS conversations (
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id INT AUTO_INCREMENT PRIMARY KEY,
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user_id INT NOT NULL,
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product_id INT NULL,
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subject VARCHAR(255) NOT NULL,
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status ENUM('open', 'closed') DEFAULT 'open',
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
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FOREIGN KEY (product_id) REFERENCES products(id) ON DELETE SET NULL,
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INDEX idx_user_status (user_id, status),
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INDEX idx_updated (updated_at DESC)
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);
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-- Messages table
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CREATE TABLE IF NOT EXISTS messages (
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id INT AUTO_INCREMENT PRIMARY KEY,
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conversation_id INT NOT NULL,
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sender_id INT NOT NULL,
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sender_role ENUM('customer', 'admin') NOT NULL,
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content TEXT NOT NULL,
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is_read BOOLEAN DEFAULT FALSE,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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FOREIGN KEY (conversation_id) REFERENCES conversations(id) ON DELETE CASCADE,
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FOREIGN KEY (sender_id) REFERENCES users(id) ON DELETE CASCADE,
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INDEX idx_conversation (conversation_id, created_at),
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INDEX idx_unread (conversation_id, is_read)
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);
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