Tcl

OpenAI (ChatGPT) Create Image

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Show how to send a POST to create an image. Gets the JSON response with URLs and then downloads images to files. Tcl

load ./chilkat.dll

set success 0

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

set http [new_CkHttp]

# Implements the following CURL command:

# curl https://api.openai.com/v1/images/generations \
#   -H "Content-Type: application/json" \
#   -H "Authorization: Bearer $OPENAI_API_KEY" \
#   -d '{
#     "prompt": "A cute baby sea otter",
#     "n": 2,
#     "size": "1024x1024"
#   }'

# Use the following online tool to generate HTTP code from a CURL command
# Convert a cURL Command to HTTP Source Code

# Use this online tool to generate code from sample JSON:
# Generate Code to Create JSON

# The following JSON is sent in the request body.

# {
#   "prompt": "A cute baby sea otter",
#   "n": 2,
#   "size": "1024x1024"
# }

set json [new_CkJsonObject]

CkJsonObject_UpdateString $json "prompt" "A cute baby sea otter"
CkJsonObject_UpdateInt $json "n" 2
CkJsonObject_UpdateString $json "size" "1024x1024"

# Adds the "Authorization: Bearer $OPENAI_API_KEY" header.
# This is NOT a real key.  Change the "sk-vi...." to your own key.
CkHttp_put_AuthToken $http "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"

set resp [new_CkHttpResponse]

set success [CkHttp_HttpJson $http "POST" "https://api.openai.com/v1/images/generations" $json "application/json" $resp]
if {$success == 0} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkHttp $http
    delete_CkJsonObject $json
    delete_CkHttpResponse $resp
    exit
}

set sbResponseBody [new_CkStringBuilder]

CkHttpResponse_GetBodySb $resp $sbResponseBody

set jResp [new_CkJsonObject]

CkJsonObject_LoadSb $jResp $sbResponseBody
CkJsonObject_put_EmitCompact $jResp 0

puts "Response Body:"
puts [CkJsonObject_emit $jResp]

set respStatusCode [CkHttpResponse_get_StatusCode $resp]
puts "Response Status Code = $respStatusCode"
if {$respStatusCode >= 400} then {
    puts "Response Header:"
    puts [CkHttpResponse_header $resp]
    puts "Failed."
    delete_CkHttp $http
    delete_CkJsonObject $json
    delete_CkHttpResponse $resp
    delete_CkStringBuilder $sbResponseBody
    delete_CkJsonObject $jResp
    exit
}

# Sample JSON response:
# (Sample code for parsing the JSON response is shown below)

# {
#   "created": 1589478378,
#   "data": [
#     {
#       "url": "https://..."
#     },
#     {
#       "url": "https://..."
#     }
#   ]
# }

# Sample code for parsing the JSON response...
# Use the following online tool to generate parsing code from sample JSON:
# Generate Parsing Code from JSON

set sbLocalFilePath [new_CkStringBuilder]

# Download each image..
CkHttp_ClearHeaders $http
CkHttp_put_AuthToken $http ""

set created [CkJsonObject_IntOf $jResp "created"]
set i 0
set count_i [CkJsonObject_SizeOfArray $jResp "data"]
while {$i < $count_i} {
    CkJsonObject_put_I $jResp $i
    set url [CkJsonObject_stringOf $jResp "data[i].url"]

    CkStringBuilder_SetString $sbLocalFilePath "c:/aaworkarea/image_"
    CkStringBuilder_AppendInt $sbLocalFilePath [expr $i + 1]
    CkStringBuilder_Append $sbLocalFilePath ".png"

    set success [CkHttp_Download $http $url [CkStringBuilder_getAsString $sbLocalFilePath]]
    if {$success == 0} then {
        puts [CkHttp_lastErrorText $http]
        delete_CkHttp $http
        delete_CkJsonObject $json
        delete_CkHttpResponse $resp
        delete_CkStringBuilder $sbResponseBody
        delete_CkJsonObject $jResp
        delete_CkStringBuilder $sbLocalFilePath
        exit
    }

    set i [expr $i + 1]
}

delete_CkHttp $http
delete_CkJsonObject $json
delete_CkHttpResponse $resp
delete_CkStringBuilder $sbResponseBody
delete_CkJsonObject $jResp
delete_CkStringBuilder $sbLocalFilePath