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In this lesson we will be connecting the front end side to the back and side open the server API file.

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Let's start our code under the game shake function.

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Here we will be creating an API where we can command the back end to start the course set the decorator.

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This time the path will be API shakes start next as the methods.

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Usually this will be post but we will add get as well so we can debug we define shakes start the course

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I.D. will be set to request args get followed by I.D..

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So we can get the I.D. if the method is set to post.

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We will be using form instead of ARGs.

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In this lesson we'll be using get so I'll comment out on this line.

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Next we need to get the course set variable course to get courses in it and course i.e. next course

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start and return.

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Jason ify result to started followed by two hundred okay response.

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Once the course starts the phone will be shaped.

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Here we need to create an API that will send a request to the back end once the phone has been checked.

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Set the decorator.

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This time the path will be API shake.

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Run methods will again be both get and post.

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Let's copy the codes to get the course I.D. from the previous code.

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Set the function name to shake.

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Run to run this function.

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We set to course run the return we'll be set to J sonnet 5 followed by the lapse time of course elapsed

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status with the core status and also to check if the drone is running on the course or not.

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These information will be returned to the front end and not to forget the 200 OK once you've finished

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your codes we'll be running these codes.

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We won't be accessing with the phones yet we can use the Mac browser to access the you or else turn

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on your drone and let's run this code.

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It'll be much easier to understand what is going on.

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If we look into the course P Why file click on the U.R.L. in the U.R.L..

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I want you to add slash API slash Sheik slash start.

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Question mark IDR equal 1.

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Here we started the course.

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Now let's change that you are able to run and hit the return button.

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You can see that the drone takes off once the drone is in the air hit the refresh button so the status

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will go up as the status reaches 10.

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The drone will rotate clockwise 90 degrees go on refreshing and at status 15 again will rotate.

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Then we hit status 20 so the drone rotates again once the status hits 25.

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The drone rotates and we'll be facing forward go on refreshing and once the status reaches 30 it will

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flip to the front at status 40.

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The drone will flip back once we hit status 50.

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The drone will land and the status will be cleared back to zero.

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I hope your drone flight was a success and see you in our next lesson.