initial draft commit

providers/google_tim/google_tim.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<providers xmlns="https://calco2la.to/schema/providers/v1">
+  <!-- Google TIM -->
+  <provider id="google_tim">
+    <name>Google Travel Impact Model</name>
+    <baseUrl>https://travelimpactmodel.googleapis.com/v1</baseUrl>
+
+    <auth type="apiKey">
+      <header>X-Goog-Api-Key</header>
+      <format>${API_KEY}</format>
+    </auth>
+
+    <operations>
+
+      <operation id="travel.flight.estimate_emissions">
+        <http method="POST" path="/flights:computeFlightEmissions" />
+
+        <requestBody format="json">
+          {
+            "flightSegments": [
+              #for leg in request.legs
+              {
+                "departureAirport": { "code": "${leg.origin_iata}" },
+                "arrivalAirport":   { "code": "${leg.destination_iata}" }
+              }#sep,
+              #end
+            ],
+            "cabinClass": "${request.cabin_class}",
+            "passengerCount": ${request.passengers}
+          }
+        </requestBody>
+
+        <responseMapping>
+          <map source="$.flightEmissions[0].co2Grams"
+               target="EmissionEstimate.co2_kg"
+               transform="divideBy1000" />
+          <map source="$.flightEmissions[0].co2eGrams"
+               target="EmissionEstimate.co2e_kg"
+               transform="divideBy1000" />
+          <map source="$.modelVersion"
+               target="EmissionEstimate.method_version" />
+          <constant target="EmissionEstimate.method_name" value="Travel Impact Model" />
+          <constant target="EmissionEstimate.vendor" value="google_tim" />
+          <map source="$" target="EmissionEstimate.vendor_raw" />
+        </responseMapping>
+      </operation>
+
+    </operations>
+  </provider>
+</providers>