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# Trigger a redeployment in Vercel
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def redeploy_vercel_project():
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    """Triggers a redeployment by selecting the latest successful deployment."""
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    url = f"{VERCEL_API_BASE_URL}/v6/deployments?projectId={VERCEL_PROJECT_ID}"
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    if VERCEL_TEAM_ID:
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        url += f"&teamId={VERCEL_TEAM_ID}"
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    headers = {"Authorization": f"Bearer {VERCEL_API_TOKEN}"}
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    deployments_response = requests.get(url, headers=headers)
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    if deployments_response.status_code != 200:
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        print(f"❌ Failed to fetch latest deployments: HTTP {deployments_response.status_code}")
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        return
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    deployments = deployments_response.json().get("deployments", [])
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    # Filter out invalid deployments
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    valid_deployments = [
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        d for d in deployments
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        if d["state"] == "READY"
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        and d.get("target") == "production"  # Ensure it's a production deployment
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        and d.get("source") != "redeploy"  # Avoid re-redeploying already redeployed deployments
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        and d.get("readySubstate") != "STAGED"  # Ignore staged deployments
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    ]
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    if not valid_deployments:
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        print("❌ No valid previous deployments found.")
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        return
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    # Select the most recent successful production deployment
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    latest_deployment_id = valid_deployments[0]["uid"]
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    print(f"🔹 Using latest deployment ID: {latest_deployment_id} for redeployment.")
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    # Redeploy using the latest deployment ID
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    redeploy_url = f"{VERCEL_API_BASE_URL}/v13/deployments/{latest_deployment_id}/rebuild"
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    if VERCEL_TEAM_ID:
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        redeploy_url += f"?teamId={VERCEL_TEAM_ID}"
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    redeploy_response = requests.post(redeploy_url, headers=headers)
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    if redeploy_response.status_code == 200:
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        print("🚀 Successfully triggered a redeployment!")
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    elif redeploy_response.status_code == 429:
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        print("❌ Too many requests. Vercel is rate-limiting redeployments. Try again later.")
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    elif redeploy_response.status_code == 508:
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        print("⚠️ Vercel is stuck in a deployment loop. Please check manually.")
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    else:
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        print(f"❌ Failed to trigger redeployment: HTTP {redeploy_response.status_code}")