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2026-10-04 00:19:45 +03:00
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+-- Fitness Tracking App - Production Database Schema
+-- Database: fitness_app
+-- Created: 2026-04-21
+
+-- Create Database
+CREATE DATABASE IF NOT EXISTS fitness_app CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
+USE fitness_app;
+
+-- Users Table
+CREATE TABLE IF NOT EXISTS users (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    uuid CHAR(36) UNIQUE NOT NULL COMMENT 'Unique identifier for the user',
+    username VARCHAR(50) UNIQUE NOT NULL,
+    email VARCHAR(100) UNIQUE NOT NULL,
+    password_hash VARCHAR(255) NOT NULL COMMENT 'bcrypt hash',
+    api_key VARCHAR(64) UNIQUE NOT NULL COMMENT 'API key for client authentication',
+    api_secret VARCHAR(64) NOT NULL COMMENT 'Secret for HMAC signature',
+    full_name VARCHAR(100),
+    avatar_url VARCHAR(255),
+    is_active BOOLEAN DEFAULT TRUE,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    INDEX idx_uuid (uuid),
+    INDEX idx_api_key (api_key),
+    INDEX idx_created_at (created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Workouts Table
+CREATE TABLE IF NOT EXISTS workouts (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    workout_uuid CHAR(36) UNIQUE NOT NULL COMMENT 'Unique identifier for the workout',
+    user_id INT NOT NULL,
+    workout_type ENUM('running', 'walking') NOT NULL,
+    distance_meters INT NOT NULL COMMENT 'Total distance in meters',
+    duration_seconds INT NOT NULL COMMENT 'Total duration in seconds',
+    elevation_gain_meters INT DEFAULT 0 COMMENT 'Elevation gain in meters',
+    elevation_loss_meters INT DEFAULT 0 COMMENT 'Elevation loss in meters',
+    calories_burned FLOAT DEFAULT 0,
+    average_pace_mps FLOAT COMMENT 'Average pace in meters per second',
+    max_speed_mps FLOAT DEFAULT 0 COMMENT 'Max speed in meters per second',
+    route_polyline LONGTEXT NOT NULL COMMENT 'Encoded polyline format (Google Maps Polyline Algorithm)',
+    coordinate_count INT NOT NULL COMMENT 'Total number of GPS coordinates recorded',
+    start_lat DECIMAL(10, 8) NOT NULL,
+    start_lng DECIMAL(11, 8) NOT NULL,
+    end_lat DECIMAL(10, 8) NOT NULL,
+    end_lng DECIMAL(11, 8) NOT NULL,
+    start_time DATETIME NOT NULL COMMENT 'ISO 8601 datetime when workout started',
+    end_time DATETIME NOT NULL COMMENT 'ISO 8601 datetime when workout ended',
+    weather_condition VARCHAR(50),
+    temperature_celsius FLOAT,
+    notes TEXT,
+    is_public BOOLEAN DEFAULT FALSE,
+    synced_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_workout_uuid (workout_uuid),
+    INDEX idx_user_id (user_id),
+    INDEX idx_workout_type (workout_type),
+    INDEX idx_synced_at (synced_at),
+    INDEX idx_created_at (created_at),
+    INDEX idx_user_created (user_id, created_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Workout Segments Table (for detailed route tracking if needed)
+CREATE TABLE IF NOT EXISTS workout_segments (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    workout_id INT NOT NULL,
+    segment_order INT NOT NULL COMMENT 'Order of segment in workout',
+    duration_seconds INT,
+    distance_meters INT,
+    average_pace_mps FLOAT,
+    index_in_polyline INT COMMENT 'Start index in polyline',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (workout_id) REFERENCES workouts(id) ON DELETE CASCADE,
+    INDEX idx_workout_id (workout_id)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- API Logs Table (for debugging and analytics)
+CREATE TABLE IF NOT EXISTS api_logs (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT,
+    endpoint VARCHAR(255),
+    method VARCHAR(10),
+    status_code INT,
+    request_hash VARCHAR(64) COMMENT 'Hash of request for deduplication',
+    ip_address VARCHAR(45),
+    user_agent VARCHAR(255),
+    response_time_ms INT,
+    error_message TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    INDEX idx_user_id (user_id),
+    INDEX idx_created_at (created_at),
+    INDEX idx_endpoint (endpoint),
+    INDEX idx_request_hash (request_hash)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Statistics Cache Table (for performance optimization)
+CREATE TABLE IF NOT EXISTS user_stats_cache (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    user_id INT UNIQUE NOT NULL,
+    total_workouts INT DEFAULT 0,
+    total_distance_meters INT DEFAULT 0,
+    total_duration_seconds INT DEFAULT 0,
+    total_calories_burned FLOAT DEFAULT 0,
+    average_pace_mps FLOAT,
+    last_workout_date DATETIME,
+    streak_days INT DEFAULT 0,
+    cached_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
+    INDEX idx_user_id (user_id),
+    INDEX idx_cached_at (cached_at)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Create Triggers for audit trail
+DELIMITER $$
+
+CREATE TRIGGER workout_audit_insert AFTER INSERT ON workouts
+FOR EACH ROW
+BEGIN
+    INSERT INTO api_logs (endpoint, method, status_code, error_message, created_at)
+    VALUES ('workouts', 'INSERT', 201, NULL, NOW());
+END $$
+
+DELIMITER ;
+
+-- Stored Procedure to get user workout statistics
+DELIMITER $$
+
+CREATE PROCEDURE GetUserStats(IN p_user_id INT)
+BEGIN
+    SELECT
+        COUNT(*) as total_workouts,
+        SUM(distance_meters) as total_distance,
+        SUM(duration_seconds) as total_duration,
+        SUM(calories_burned) as total_calories,
+        AVG(average_pace_mps) as avg_pace,
+        MAX(created_at) as last_workout,
+        workout_type
+    FROM workouts
+    WHERE user_id = p_user_id
+    GROUP BY workout_type
+    ORDER BY created_at DESC;
+END $$
+
+DELIMITER ;
+
+-- Initial indexes for optimal query performance
+CREATE INDEX idx_workouts_stats ON workouts(user_id, workout_type, created_at);
+CREATE INDEX idx_users_active ON users(is_active, created_at);