import core.TrajectorySimulator
import core.SimulatorConfig
import core.PhysicsConfig
import core.NoiseConfig
import core.OutputConfig
import resources.data.sampleRoute

/**
 * 主程序入口
 * 
 * 演示如何使用 TrajectorySimulator 生成轨迹数据
 * 
 * 完整流程：
 * 1. 加载样本轨迹
 * 2. 创建模拟器实例
 * 3. 配置参数
 * 4. 模拟运动
 * 5. 输出结果
 */
fun main() {
    // ════════════════════════════════════════════
    // 第1步：准备数据
    // ════════════════════════════════════════════
    val route = sampleRoute
    
    // ════════════════════════════════════════════
    // 第2步：创建模拟器
    // ════════════════════════════════════════════
    val config = SimulatorConfig(
        physics = PhysicsConfig(
            totalDistance = 2000.0,
            duration = 600.0,
            maxVelocity = 4.0,
            minVelocity = 1.8,
            sampleStepSeconds = 1.0,
            modelMaxAccelerationMps2 = 1.2,
            seed = 42L
        ),
        noise = NoiseConfig(
            gpsErrorStdDev = 0.00002,
            driftWeight = 0.1
        ),
        output = OutputConfig(
            duration = 600.0,
            timeStep = 3.0
        )
    )
    val simulator = TrajectorySimulator(route, config)
    
    // ════════════════════════════════════════════
    // 第4步：模拟运动（逐个时间步）
    // ════════════════════════════════════════════
    val timeStep = config.output.timeStep
    val duration = config.output.duration       // 总模拟时长10分钟
    
    println("时间(秒)\t距离(米)\t速度(m/s)\t加速度(m/s²)\t纬度\t\t经度\t\tGPS误差(m)")
    println("─".repeat(100))
    
    val routeStates = simulator.routeOut(duration = duration, timeStep = timeStep)
    routeStates.forEach { motionState ->
        println(
            "%.1f\t%.1f\t%.3f\t%.3f\t%.6f\t%.6f\t%.6f".format(
                motionState.time,
                motionState.distance,
                motionState.velocity,
                motionState.acceleration,
                motionState.latitude,
                motionState.longitude,
                motionState.gpsError
            )
        )
    }
    
    println("\n模拟完成！")
}

/**
 * 伪代码：未来扩展示例
 * 
 * // 例1：支持多个样本轨迹
 * val simulator2 = TrajectorySimulator(customRoute)
 * 
 * // 例2：生成多个轨迹并导出GPX/KML
 * val motionStates = mutableListOf<MotionState>()
 * for (time in 0.0..duration step timeStep) {
 *     motionStates.add(simulator.simulate(time))
 * }
 * GpxExporter.export(motionStates, "output.gpx")
 * KmlExporter.export(motionStates, "output.kml")
 * 
 * // 例3：统计分析
 * val avgVelocity = motionStates.map { it.velocity }.average()
 * val maxError = motionStates.map { it.gpsError }.maxOrNull()
 */