---

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Clover Gazebo. map frame, z=1.0.
LED after arriving (go_led). set_altitude locks height each step.
"""

import rospy
from clover import srv
from clover.srv import SetLEDEffect
from std_srvs.srv import Trigger

Z = 1.0
SPD = 0.45
SPD_SLOW = 0.32

rospy.init_node('clover_autonomous_mission')
navigate = rospy.ServiceProxy('navigate', srv.Navigate)
set_altitude = rospy.ServiceProxy('set_altitude', srv.SetAltitude)
land = rospy.ServiceProxy('land', Trigger)
set_effect = rospy.ServiceProxy('led/set_effect', SetLEDEffect)


def led(r, g, b):
    try:
        set_effect(effect='fill', r=r, g=g, b=b)
    except rospy.ServiceException:
        pass
    rospy.sleep(0.4)


def go(x, y, t=5.0, speed=SPD):
    set_altitude(z=Z, frame_id='map')
    navigate(x=x, y=y, z=Z, speed=speed, frame_id='map')
    rospy.sleep(t)


def go_led(x, y, r, g, b, t=5.0, speed=SPD):
    go(x, y, t, speed)
    led(r, g, b)


def marker_xy(mid):
    row = mid // 7
    col = mid % 7
    return col * 1.0, (6 - row) * 1.0


def mid(a, b):
    xa, ya = marker_xy(a)
    xb, yb = marker_xy(b)
    return (xa + xb) / 2.0, (ya + yb) / 2.0


try:
    led(255, 255, 255)
    navigate(x=0, y=0, z=Z, speed=0.4, frame_id='body', auto_arm=True)
    rospy.sleep(6.0)
    set_altitude(z=Z, frame_id='map')

    x, y = marker_xy(44)
    go(x, y, 5.0)

    x, y = marker_xy(38)
    go_led(x, y, 255, 0, 255, 6.0)
    rospy.sleep(1.0)

    x, y = mid(26, 33)
    go_led(x, y, 255, 165, 0, 6.0)

    go(5.0, 4.0, 5.0)
    x, y = mid(19, 20)
    go_led(x, y, 0, 255, 255, 7.0)

    x, y = marker_xy(12)
    go_led(x, y, 128, 0, 255, 6.5)

    x, y = marker_xy(11)
    go(x, y, 5.0)

    x, y = marker_xy(17)
    go_led(x, y, 255, 0, 0, 6.0)

    # after red: only along axes, slow (was flying up on diagonal)
    go(3.0, 5.0, 5.5, speed=SPD_SLOW)   # up in Y to row of marker 9
    go(2.0, 5.0, 5.5, speed=SPD_SLOW)   # marker 9
    go_led(1.0, 5.0, 255, 255, 0, 6.0, speed=SPD_SLOW)  # marker 8 yellow

    gx, gy = mid(14, 21)
    go(1.0, gy, 5.5, speed=SPD_SLOW)
    go_led(gx, gy, 0, 255, 0, 5.5, speed=SPD_SLOW)

    bx, by = mid(22, 23)
    go_led(bx, by, 0, 0, 139, 5.5, speed=SPD_SLOW)

    # second pink: no detour via (2,2)
    go(2.0, 1.0, 5.5, speed=SPD_SLOW)
    x, y = marker_xy(38)
    go_led(x, y, 255, 0, 255, 6.5, speed=SPD_SLOW)

    # home along bottom row
    go(3.0, 0.0, 5.5, speed=SPD_SLOW)
    go(2.0, 0.0, 5.0, speed=SPD_SLOW)
    go(1.0, 0.0, 5.0, speed=SPD_SLOW)
    go(0.0, 0.0, 7.0, speed=SPD_SLOW)

    land()
    rospy.sleep(3.0)
    led(0, 0, 0)

except rospy.ROSInterruptException:
    pass
except KeyboardInterrupt:
    try:
        land()
        led(0, 0, 0)
    except rospy.ServiceException:
        pass