CkPython

Download Photo to a File

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Assuming we have the ID of a Photo, this example demonstrates how to download the photo image data to a file. CkPython

import sys
import chilkat

success = False

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# This example assumes a previously obtained an access token
oauth2 = chilkat.CkOAuth2()
oauth2.put_AccessToken("FACEBOOK-ACCESS-TOKEN")

rest = chilkat.CkRest()

# Connect to Facebook...
success = rest.Connect("graph.facebook.com",443,True,True)
if (success != True):
    print(rest.lastErrorText())
    sys.exit()

# Provide the authentication credentials (i.e. the access key)
rest.SetAuthOAuth2(oauth2)

# Assumes we've already obtained a Photo ID.
photoId = "10210199026347451"

sbPath = chilkat.CkStringBuilder()
sbPath.Append("/v2.7/")
sbPath.Append(photoId)

# First we're going to get the photo informaton so we can get the URL of the image file data.
# Select the fields we want.
# See https://developers.facebook.com/docs/graph-api/reference/photo/
rest.AddQueryParam("fields","id,album,images")

responseJson = rest.fullRequestNoBody("GET",sbPath.getAsString())
if (rest.get_LastMethodSuccess() != True):
    print(rest.lastErrorText())
    sys.exit()

json = chilkat.CkJsonObject()
json.put_EmitCompact(False)
json.Load(responseJson)

# Show the JSON in human-readable format.
print(json.emit())

# Get the image URL.
imageUrl = json.stringOf("images[0].source")
print("Downloading from " + imageUrl)

sbImageUrl = chilkat.CkStringBuilder()
sbImageUrl.Append(imageUrl)

# Build the output local file path.
sbToPath = chilkat.CkStringBuilder()
sbToPath.Append("qa_output/fb")
sbToPath.Append(json.stringOf("id"))
bCaseSensitive = False
if (sbImageUrl.Contains(".jpg",bCaseSensitive) == True):
    sbToPath.Append(".jpg")
else:
    sbToPath.Append(".png")

print("Downloading to " + sbToPath.getAsString())

# Download using Chilkat HTTP.
http = chilkat.CkHttp()
success = http.Download(imageUrl,sbToPath.getAsString())
if (success != True):
    print(http.lastErrorText())
else:
    print("Downloaded.")