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83 lines
2.2 KiB
Python
83 lines
2.2 KiB
Python
# Copyright 2026 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from google.adk import Agent
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from google.adk import Event
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from google.adk import Workflow
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from google.adk.events import RequestInput
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def process_input(node_input: str):
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"""Takes the initial customer complaint as input and sets it in the state."""
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yield Event(state={"complaint": node_input, "feedback": ""})
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draft_email = Agent(
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name="draft_email",
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instruction="""
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Please write a polite, helpful response email to the following customer complaint: "{complaint}"
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If there is any feedback from the manager to revise the draft, please incorporate it: "{feedback?}"
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""",
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output_key="draft",
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)
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def request_human_review(draft: str):
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yield RequestInput(
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message=(
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"Please review the following draft email and provide 'approve',"
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f" 'reject', or feedback to revise.\n\n---\n{draft}\n---"
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),
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)
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def handle_human_review(node_input: str):
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if node_input == "reject":
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yield Event(route="rejected")
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elif node_input == "approve":
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yield Event(route="approved")
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else:
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yield Event(state={"feedback": node_input}, route="revise")
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def reject_email():
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yield Event(message="Draft rejected.")
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def send_email(draft: str):
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yield Event(message="Draft approved and sent successfully.")
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root_agent = Workflow(
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name="request_input",
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edges=[
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(
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"START",
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process_input,
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draft_email,
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request_human_review,
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handle_human_review,
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),
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(
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handle_human_review,
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{
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"revise": draft_email,
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"approved": send_email,
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"rejected": reject_email,
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},
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),
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],
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)
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