-- Migration: Create competitor_surge_zones table for heatmap integration
-- Purpose: Bridge the geographic surge anomalies from Node.js pricing engine to PHP heatmap

CREATE TABLE IF NOT EXISTS `competitor_surge_zones` (
  `id` INT AUTO_INCREMENT PRIMARY KEY,
  `competitor_name` VARCHAR(100) NOT NULL,
  `country_code` VARCHAR(5) NOT NULL,
  `zone_key` VARCHAR(50) NOT NULL,
  `latitude` DECIMAL(10,6) NOT NULL,
  `longitude` DECIMAL(10,6) NOT NULL,
  `avg_ppk` DECIMAL(10,3) NOT NULL,
  `sample_count` INT NOT NULL,
  `surge_multiplier` DECIMAL(5,3) NOT NULL DEFAULT 1.000,
  `detected_at` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  UNIQUE KEY `unique_zone` (`competitor_name`, `country_code`, `zone_key`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;