|
| 1 | +import base64 |
| 2 | +from io import BytesIO |
| 3 | + |
| 4 | +import yoti_python_sdk |
| 5 | +from filetype import filetype |
| 6 | +from flask import Flask, Response, render_template, request, send_file, session |
| 7 | +from yoti_python_sdk.doc_scan import ( |
| 8 | + DocScanClient, |
| 9 | + RequestedDocumentAuthenticityCheckBuilder, |
| 10 | + RequestedFaceMatchCheckBuilder, |
| 11 | + RequestedLivenessCheckBuilder, |
| 12 | + RequestedTextExtractionTaskBuilder, |
| 13 | + SdkConfigBuilder, |
| 14 | + SessionSpecBuilder, |
| 15 | +) |
| 16 | +from yoti_python_sdk.doc_scan.exception import DocScanException |
| 17 | + |
| 18 | +from .settings import YOTI_APP_BASE_URL, YOTI_CLIENT_SDK_ID, YOTI_KEY_FILE_PATH |
| 19 | + |
| 20 | +app = Flask(__name__) |
| 21 | +app.secret_key = "someSecretKey" |
| 22 | + |
| 23 | + |
| 24 | +def create_session(): |
| 25 | + """ |
| 26 | + Creates a Doc Scan session |
| 27 | +
|
| 28 | + :return: the create session result |
| 29 | + :rtype: CreateSessionResult |
| 30 | + """ |
| 31 | + doc_scan_client = DocScanClient(YOTI_CLIENT_SDK_ID, YOTI_KEY_FILE_PATH) |
| 32 | + |
| 33 | + sdk_config = ( |
| 34 | + SdkConfigBuilder() |
| 35 | + .with_allows_camera_and_upload() |
| 36 | + .with_primary_colour("#2d9fff") |
| 37 | + .with_secondary_colour("#FFFFFF") |
| 38 | + .with_font_colour("#FFFFFF") |
| 39 | + .with_locale("en-GB") |
| 40 | + .with_preset_issuing_country("GBR") |
| 41 | + .with_success_url("{url}/success".format(url=YOTI_APP_BASE_URL)) |
| 42 | + .with_error_url("{url}/error".format(url=YOTI_APP_BASE_URL)) |
| 43 | + .build() |
| 44 | + ) |
| 45 | + |
| 46 | + session_spec = ( |
| 47 | + SessionSpecBuilder() |
| 48 | + .with_client_session_token_ttl(600) |
| 49 | + .with_resources_ttl(90000) |
| 50 | + .with_user_tracking_id("some-user-tracking-id") |
| 51 | + .with_requested_check(RequestedDocumentAuthenticityCheckBuilder().build()) |
| 52 | + .with_requested_check( |
| 53 | + RequestedLivenessCheckBuilder() |
| 54 | + .for_zoom_liveness() |
| 55 | + .with_max_retries(1) |
| 56 | + .build() |
| 57 | + ) |
| 58 | + .with_requested_check( |
| 59 | + RequestedFaceMatchCheckBuilder().with_manual_check_fallback().build() |
| 60 | + ) |
| 61 | + .with_requested_task( |
| 62 | + RequestedTextExtractionTaskBuilder().with_manual_check_always().build() |
| 63 | + ) |
| 64 | + .with_sdk_config(sdk_config) |
| 65 | + .build() |
| 66 | + ) |
| 67 | + |
| 68 | + return doc_scan_client.create_session(session_spec) |
| 69 | + |
| 70 | + |
| 71 | +@app.route("/") |
| 72 | +def index(): |
| 73 | + try: |
| 74 | + result = create_session() |
| 75 | + except DocScanException as e: |
| 76 | + return render_template("error.html", error=e.text) |
| 77 | + |
| 78 | + session["doc_scan_session_id"] = result.session_id |
| 79 | + |
| 80 | + iframe_url = "{base_url}/web/index.html?sessionID={session_id}&sessionToken={session_token}".format( |
| 81 | + base_url=yoti_python_sdk.YOTI_DOC_SCAN_API_URL, |
| 82 | + session_id=result.session_id, |
| 83 | + session_token=result.client_session_token, |
| 84 | + ) |
| 85 | + |
| 86 | + return render_template("index.html", iframe_url=iframe_url) |
| 87 | + |
| 88 | + |
| 89 | +@app.route("/success") |
| 90 | +def success(): |
| 91 | + doc_scan_client = DocScanClient(YOTI_CLIENT_SDK_ID, YOTI_KEY_FILE_PATH) |
| 92 | + |
| 93 | + session_id = session.get("doc_scan_session_id", None) |
| 94 | + |
| 95 | + try: |
| 96 | + session_result = doc_scan_client.get_session(session_id) |
| 97 | + except DocScanException as e: |
| 98 | + return render_template("error.html", error=e.text) |
| 99 | + |
| 100 | + return render_template("success.html", session_result=session_result) |
| 101 | + |
| 102 | + |
| 103 | +@app.route("/error") |
| 104 | +def error(): |
| 105 | + error_message = "An unknown error occurred" |
| 106 | + |
| 107 | + if request.args.get("yotiErrorCode", None) is not None: |
| 108 | + error_message = "Error Code: {}".format(request.args.get("yotiErrorCode")) |
| 109 | + |
| 110 | + return render_template("error.html", error=error_message) |
| 111 | + |
| 112 | + |
| 113 | +@app.route("/media") |
| 114 | +def media(): |
| 115 | + media_id = request.args.get("mediaId", None) |
| 116 | + if media_id is None: |
| 117 | + return Response(status=404) |
| 118 | + |
| 119 | + doc_scan_client = DocScanClient(YOTI_CLIENT_SDK_ID, YOTI_KEY_FILE_PATH) |
| 120 | + |
| 121 | + base64_req = request.args.get("base64", "0") |
| 122 | + |
| 123 | + session_id = session.get("doc_scan_session_id", None) |
| 124 | + if session_id is None: |
| 125 | + return Response("No session ID available", status=404) |
| 126 | + |
| 127 | + try: |
| 128 | + retrieved_media = doc_scan_client.get_media_content(session_id, media_id) |
| 129 | + except DocScanException as e: |
| 130 | + return render_template("error.html", error=e.text) |
| 131 | + |
| 132 | + if base64_req == "1" and retrieved_media.mime_type == "application/octet-stream": |
| 133 | + decoded = base64.b64decode(retrieved_media.content) |
| 134 | + info = filetype.guess(decoded) |
| 135 | + |
| 136 | + buffer = BytesIO() |
| 137 | + buffer.write(decoded) |
| 138 | + buffer.seek(0) |
| 139 | + |
| 140 | + return send_file( |
| 141 | + buffer, |
| 142 | + attachment_filename="media." + info.extension, |
| 143 | + mimetype=info.mime, |
| 144 | + as_attachment=True, |
| 145 | + ) |
| 146 | + |
| 147 | + return Response( |
| 148 | + retrieved_media.content, content_type=retrieved_media.mime_type, status=200 |
| 149 | + ) |
| 150 | + |
| 151 | + |
| 152 | +if __name__ == "__main__": |
| 153 | + app.run() |
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