#!/bin/bash
set -e

echo "Validating Renovate configuration..."
renovate-config-validator

echo "Running Renovate E2E (no dry-run)..."
# Capture output but also stream it to stdout for debugging
set +e
renovate > renovate-e2e-output.log 2>&1
RENOVATE_EXIT_CODE=$?
set -e

cat renovate-e2e-output.log

if [ $RENOVATE_EXIT_CODE -ne 0 ]; then
  echo "Error: Renovate command failed with exit code $RENOVATE_EXIT_CODE"
  exit 1
fi

# Assertions
echo "Checking for successful run..."
if ! grep -q "Repository finished" renovate-e2e-output.log; then
  echo "Error: Renovate run did not finish successfully."
  exit 1
fi

echo "Checking for errors..."
if grep -q "ERROR" renovate-e2e-output.log; then
  echo "Error: Renovate log contains errors."
  exit 1
fi

echo "E2E Test passed!"
rm renovate-e2e-output.log

# API Verification and Cleanup
GITEA_API_URL="https://gitea.kovagoadi.hu/api/v1"
REPO_OWNER="renovate-test"
REPO_NAME="test"

# Function to clean up PRs and reset repo
cleanup() {
  echo "Cleaning up..."
  
  # 1. Delete all Open PRs
  PRS=$(curl -s -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/pulls?state=open")
  PR_INDEXES=$(echo "$PRS" | jq -r '.[].number')
  for INDEX in $PR_INDEXES; do
    if [ "$INDEX" != "null" ]; then
      echo "Deleting PR #$INDEX..."
      curl -s -X DELETE -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/issues/$INDEX"
    fi
  done

  # 2. Delete renovate.json from main branch to reset state (if exists)
  FILE_INFO=$(curl -s -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/contents/renovate.json?ref=main")
  FILE_SHA=$(echo "$FILE_INFO" | jq -r '.sha')
  
  if [ "$FILE_SHA" != "null" ] && [ -n "$FILE_SHA" ]; then
    echo "Deleting renovate.json to reset repository state..."
    curl -s -X DELETE -H "Authorization: token $RENOVATE_TOKEN" \
         -H "Content-Type: application/json" \
         -d "{\"message\": \"Cleanup: Delete renovate.json\", \"sha\": \"$FILE_SHA\", \"branch\": \"main\"}" \
         "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/contents/renovate.json"
  fi
}

# Register cleanup to run on exit
trap cleanup EXIT

# --- Step 1: Initial Run (Onboarding) ---
echo "Running Renovate E2E (Run 1: Onboarding)..."
set +e
renovate > renovate-e2e-output.log 2>&1
RENOVATE_EXIT_CODE=$?
set -e
cat renovate-e2e-output.log

if [ $RENOVATE_EXIT_CODE -ne 0 ]; then
  echo "Error: Renovate command failed."
  exit 1
fi

# Check for Onboarding PR
PRS=$(curl -s -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/pulls?state=open")
ONBOARDING_PR_NUM=$(echo "$PRS" | jq -r '.[] | select(.title | contains("Configure Renovate")) | .number')

if [ -n "$ONBOARDING_PR_NUM" ] && [ "$ONBOARDING_PR_NUM" != "null" ]; then
  echo "Onboarding PR found (#$ONBOARDING_PR_NUM). Merging it to enable updates..."
  
  # Merge Onboarding PR
  MERGE_RESP=$(curl -s -X POST -H "Authorization: token $RENOVATE_TOKEN" \
               -H "Content-Type: application/json" \
               -d "{\"Do\": \"merge\"}" \
               "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/pulls/$ONBOARDING_PR_NUM/merge")
               
  # Check if merge was successful (simple check)
  if echo "$MERGE_RESP" | grep -q "Pull request has been merged"; then
     echo "Onboarding PR merged successfully."
  else
     # Fallback: check status code or response
     echo "Merge response: $MERGE_RESP"
  fi

  # --- Step 2: Second Run (Updates) ---
  echo "Running Renovate E2E (Run 2: Updates)..."
  set +e
  renovate > renovate-e2e-output-2.log 2>&1
  RENOVATE_EXIT_CODE=$?
  set -e
  cat renovate-e2e-output-2.log
  
  if [ $RENOVATE_EXIT_CODE -ne 0 ]; then
    echo "Error: Renovate command (Run 2) failed."
    exit 1
  fi
  
else
  echo "No Onboarding PR found. Assuming repo is already onboarded or config exists."
fi

echo "Verifying Update PRs and Content..."
# Fetch PRs again
PRS=$(curl -s -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/pulls?state=open")

# Verify Nginx PR
NGINX_PR_NUM=$(echo "$PRS" | jq -r '.[] | select(.title | contains("Update nginx Docker tag")) | .number')
if [ -n "$NGINX_PR_NUM" ] && [ "$NGINX_PR_NUM" != "null" ]; then
  echo "API Verification: Nginx PR found (#$NGINX_PR_NUM)."
  
  # Verify Content
  DIFF=$(curl -s -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/pulls/$NGINX_PR_NUM.diff")
  if echo "$DIFF" | grep -q "nginx:1.29.3"; then
     echo "Content Verification: Nginx version update found in diff."
  else
     echo "Content Verification Failed: Nginx version update NOT found in diff."
     exit 1
  fi
else
  echo "API Verification Failed: Nginx PR not found."
  exit 1
fi

# Verify Actions/Checkout PR
ACTIONS_PR_NUM=$(echo "$PRS" | jq -r '.[] | select(.title | contains("Update actions/checkout action")) | .number')
if [ -n "$ACTIONS_PR_NUM" ] && [ "$ACTIONS_PR_NUM" != "null" ]; then
  echo "API Verification: Actions/Checkout PR found (#$ACTIONS_PR_NUM)."

  # Verify Content
  DIFF=$(curl -s -H "Authorization: token $RENOVATE_TOKEN" "$GITEA_API_URL/repos/$REPO_OWNER/$REPO_NAME/pulls/$ACTIONS_PR_NUM.diff")
  if echo "$DIFF" | grep -q "actions/checkout@v6"; then
     echo "Content Verification: Actions/Checkout version update found in diff."
  else
     echo "Content Verification Failed: Actions/Checkout version update NOT found in diff."
     exit 1
  fi
else
  echo "API Verification Failed: Actions/Checkout PR not found."
  exit 1
fi

echo "API & Content Verification passed!"