21 lines
1.2 KiB
SQL
21 lines
1.2 KiB
SQL
-- ==============================================================================
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-- 🗄️ Conversation States Table Schema
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-- Persists multi-stage flow sessions for WhatsApp contacts.
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-- ==============================================================================
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CREATE TABLE IF NOT EXISTS `conversation_states` (
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`id` INT AUTO_INCREMENT PRIMARY KEY,
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`company_id` INT NOT NULL,
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`contact_phone` VARCHAR(512) NOT NULL COMMENT 'Encrypted using AES-256-GCM',
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`contact_phone_hash` VARCHAR(64) NOT NULL COMMENT 'HMAC-SHA256 Blind Index',
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`flow_name` VARCHAR(100) NOT NULL COMMENT 'e.g. test_flow, registration',
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`current_step` VARCHAR(100) NOT NULL,
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`context_data` JSON DEFAULT NULL COMMENT 'Stores transient state data',
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`expires_at` TIMESTAMP NOT NULL,
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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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UNIQUE KEY `unique_company_contact` (`company_id`, `contact_phone_hash`),
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FOREIGN KEY (`company_id`) REFERENCES `companies` (`id`) ON DELETE CASCADE,
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INDEX `idx_conv_expires` (`expires_at`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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