Feature/covid stats

Covid India Stats App/README.md

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+# COVID19 STATS APP FOR INDIAN STATES
+
+This project uses the following API for getting the stats
+[COVID19 STATS](https://api.covid19india.org/data.json)
+
+## Requirments
+- Flask
+- ngrok: for getting public URL for your local API else deploy in servers like Heroku
+- Facebook page
+- Facebook developer account: for connecting backend with chatbot app
+
+## How to use this code ?
+- Create app in developer portal and connect with facebook page
+  - Obtain app id
+  - Generate token for the page you have linked with the app  
+- Install flask and other requirements and run the app
+- Use ngrok like software for creating public URL
+- Add public URL as callback URL in developer portal
+- Edit subscription of your added page and tick the following
+    - messages
+    - messaging_postbacks
+    - messaging_referrals
+- The verification token for this script is "abc".This will be used for verifying the webhook
+- Ensure that you have added the generation token in the step 1 in the code
+
+```ACCESS_TOKEN = "random token"```
+
+Now send a message from messenger from your facebook page and get corresponding stats
+
+![messenger-1](https://user-images.githubusercontent.com/73653978/111796544-4a97fa00-88ee-11eb-9e8a-e22031a6d665.PNG)
+
+![messenger-2](https://user-images.githubusercontent.com/73653978/111796445-318f4900-88ee-11eb-9db0-07bc8c765bae.PNG)
+
+![messenger-3](https://user-images.githubusercontent.com/73653978/111796633-5e436080-88ee-11eb-9f2e-f8e257bf43fb.PNG)
+
+## Author
+[Devika S G](https://github.com/dsg1320)

Covid India Stats App/app.py

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+import json
+from flask import Flask, request
+import requests
+# Token that has to be generated from webhook page portal
+ACCESS_TOKEN = "random token"
+# Token that has to be added for verification with developer portal
+VERIFICATION_TOKEN = "abc"
+# Identifier payloads for initial button
+C19INDIA = "C19INDIA"
+app = Flask(__name__)
+
+
+# This get endpoint is for verification with messenger app
+@app.route('/webhook', methods=['GET'])
+def webhook():
+    verify_token = request.args.get("hub.verify_token")
+    if verify_token == VERIFICATION_TOKEN:
+        return request.args.get("hub.challenge")
+    return 'Unable to authorise.'
+
+
+@app.route("/webhook", methods=['POST'])
+def webhook_handle():
+    data = request.get_json()
+
+    if data["object"] == "page":  # To verify that the request is being originated from a page
+
+        for entry in data["entry"]:
+            for event in entry["messaging"]:
+
+                if event.get("message"):  # somebody typed a message
+                    process_message(event)
+                elif event.get("postback"):  # user clicked/tapped "postback" button in earlier message
+                    process_postback(event)
+    return 'ok'
+
+
+def process_message(event):
+    sender_id = event["sender"]["id"]  # the facebook ID of the person sending you the message
+
+    # could receive text or attachment but not both
+    if "text" in event["message"]:
+        send_initial_menu(sender_id)
+
+
+def send_initial_menu(sender_id):
+    message_data = json.dumps({
+        "recipient": {
+            "id": sender_id
+        },
+        "message": {
+            "attachment": {
+                "type": "template",
+                "payload": {
+                    "template_type": "generic",
+                    "elements": [{
+                        "title": "Covid India Stats",
+                        "subtitle": "Get the covid19 stats of Indian states",
+                        "buttons": [{
+                            "type": "web_url",
+                            "url": "https://www.worldometers.info/coronavirus/country/india/",
+                            "title": "Open Worldometer India"
+                        }, {
+                            "type": "postback",
+                            "title": "Get Stats By Indian States",
+                            "payload": C19INDIA,
+                        }],
+                    }]
+                }
+            }
+        }
+    })
+
+    call_send_api(message_data)
+
+
+def send_state_list(sender_id):
+    message_data = json.dumps({
+        "recipient": {
+            "id": sender_id
+        },
+        "message": {
+            "attachment": {
+                "type": "template",
+                "payload": {
+                    "template_type": "generic",
+                    "elements": [{
+                        "title": "Select State",
+                        "buttons": create_state_list(1)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(2)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(3)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(4)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(5)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(6)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(7)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(8)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(9)
+                    }, {
+                        "title": "Select State",
+                        "buttons": create_state_list(10)
+                    }]
+                }
+            }
+        }
+    })
+
+    call_send_api(message_data)
+
+
+def create_state_list(index):
+    state_list = ["Maharashtra", "Kerala", "Karnataka", "Andhra Pradesh", "Tamil Nadu", "Delhi", "Uttar Pradesh",
+                  "West Bengal", "Odisha", "Rajasthan", "Chhattisgarh", "Telangana", "Haryana", "Gujarat", "Bihar",
+                  "Madhya Pradesh", "Assam", "Punjab", "Jharkhand", "Uttarakhand", "Himachal Pradesh", "Goa", "Tripura",
+                  "Manipur", "Arunachal Pradesh", "Meghalaya", "Nagaland", "Sikkim", "Mizoram"]
+    payload_list = []
+    start_index = 0 + 3 * (index - 1)
+    end_index = 29 if (start_index + 3) > 29 else (start_index + 3)
+    for i in range(start_index, end_index):
+        postback = {}
+        postback["type"] = "postback"
+        postback["title"] = state_list[i]
+        postback["payload"] = state_list[i]
+        payload_list.append(postback)
+    return payload_list
+
+
+def get_stats_send(sender_id, state):
+    response = json.loads(requests.get("https://api.covid19india.org/data.json").text)
+    list_state = response['statewise']
+    for i in list_state:
+        if i['state'] == state:
+            x = i
+            break
+    message_data = json.dumps({
+        "recipient": {
+            "id": sender_id
+        },
+        "message": {
+            "text": "ACTIVE CASES: {}\nCONFIRMED CASES: {}\nDEATHS: {}\nRECOVERED: {}".format(x['active'],
+                                                                                              x['confirmed'],
+                                                                                              x['deaths'],
+                                                                                              x['recovered'])
+        }
+    })
+    call_send_api(message_data)
+
+
+def process_postback(event):
+    sender_id = event["sender"]["id"]
+    payload = event["postback"]["payload"]
+
+    if payload == C19INDIA:
+        send_state_list(sender_id)
+    else:
+        get_stats_send(sender_id, payload)
+
+
+def call_send_api(message_data):
+    params = {
+        "access_token":  ACCESS_TOKEN
+    }
+    headers = {
+        "Content-Type": "application/json"
+    }
+
+    r = requests.post("https://graph.facebook.com/v5.0/me/messages", params=params, headers=headers, data=message_data)
+
+
+if __name__ == "__main__":
+    app.run()