#!/bin/bash
set -e

apk add --no-cache git bash curl yq jq

echo "🔍 Scanning for apps with cname.yaml..."

mkdir -p generated-values
rm -rf .tmp-repos
mkdir -p .tmp-repos

SANDBOX_REPO_URL="https://git.dvirlabs.com/dvirlabs/sandbox.git"
INFRA_REPO_URL="https://${GIT_TOKEN}@git.dvirlabs.com/dvirlabs/infra.git"
SANDBOX_CLONE=".tmp-repos/sandbox"
INFRA_CLONE=".tmp-repos/infra"
GENERATED_FILE="generated-values/cloudflared-values.yaml"
ORIGINAL_FILE="$INFRA_CLONE/manifests/cloudflared/values.yaml"
MERGED_FILE="$INFRA_CLONE/manifests/cloudflared/values.yaml"

echo "###### Debug ls -l ######"
ls -l
echo "###### Debug ls -l generated-values ######" 
ls -l generated-values
echo "###### Debug pwd ######"
pwd
echo "###### Debug pwd $GENERATED_FILE ######"
pwd $GENERATED_FILE

echo "📦 Cloning repos..."
git clone --depth=1 "$SANDBOX_REPO_URL" "$SANDBOX_CLONE"
git clone --depth=1 "$INFRA_REPO_URL" "$INFRA_CLONE"

echo "⚙️ Generating ingress entries..."
cat <<EOF > "$GENERATED_FILE"
ingress: []
EOF

find "$SANDBOX_CLONE/manifests" -name cname.yaml | while read -r cname_file; do
  app_dir=$(dirname "$cname_file")
  app_name=$(basename "$app_dir")
  namespace=$(basename "$(dirname "$app_dir")")
  enabled=$(yq '.enabled' "$cname_file")

  if [[ "$enabled" == "true" ]]; then
    hostname=$(yq '.hostname' "$cname_file")
    service="http://${app_name}.${namespace}.svc.cluster.local:80"

    echo "✅ $hostname → $service"
    yq eval ".ingress += [{\"hostname\": \"$hostname\", \"service\": \"$service\", \"namespace\": \"$namespace\"}]" -i "$GENERATED_FILE"
  fi
done

echo "📄 Ingress generated:"
cat "$GENERATED_FILE"

# === Merge new ingress into cloudflare.ingress ===
echo "🔁 Merging new entries..."

TEMP_FILE=$(mktemp)
cp "$ORIGINAL_FILE" "$TEMP_FILE"

existing_json=$(yq e -o=json '.cloudflare.ingress' "$TEMP_FILE" 2>/dev/null || echo "[]")
echo "$existing_json" > /tmp/existing.json

yq eval '.ingress' "$GENERATED_FILE" | yq -o=json | jq -c '.[]' | while read -r new_entry; do
  hostname=$(echo "$new_entry" | jq -r '.hostname')
  service=$(echo "$new_entry" | jq -r '.service')
  namespace=$(echo "$new_entry" | jq -r '.namespace')

  exists=$(jq --arg hostname "$hostname" '.[] | select(.hostname == $hostname)' /tmp/existing.json)

  if [ -z "$exists" ]; then
    echo "➕ Adding $hostname"
    yq e ".cloudflare.ingress += [{\"hostname\": \"$hostname\", \"service\": \"$service\", \"namespace\": \"$namespace\"}]" -i "$TEMP_FILE"
  else
    echo "⚠️  $hostname already exists, skipping"
  fi
done

# === Format ingress list ===
echo "🧼 Regrouping by namespace..."

FINAL_FILE=$(mktemp)
yq e 'del(.cloudflare.ingress)' "$TEMP_FILE" > "$FINAL_FILE"
echo "  ingress:" >> "$FINAL_FILE"

yq e '.cloudflare.ingress' "$TEMP_FILE" | yq -o=json | jq -s 'group_by(.namespace)[]' | while read -r group; do
  namespace=$(echo "$group" | jq -r '.[0].namespace')
  echo "    # ############ $namespace ############" >> "$FINAL_FILE"
  echo "$group" | jq -c '.[]' | while read -r item; do
    hostname=$(echo "$item" | jq -r '.hostname')
    service=$(echo "$item" | jq -r '.service')
    echo "    - hostname: $hostname" >> "$FINAL_FILE"
    echo "      service: $service" >> "$FINAL_FILE"
  done
done

# Merge back under cloudflare.ingress
FINAL_MERGED=$(mktemp)
yq e 'del(.cloudflare.ingress)' "$TEMP_FILE" > "$FINAL_MERGED"
cat "$FINAL_FILE" >> "$FINAL_MERGED"

cp "$FINAL_MERGED" "$MERGED_FILE"

echo "✅ Final values.yaml:"
cat "$MERGED_FILE"

# === Git commit/push ===
cd "$INFRA_CLONE"
git config user.name "woodpecker-bot"
git config user.email "ci@dvirlabs.com"
git remote set-url origin "https://${GIT_TOKEN}@git.dvirlabs.com/dvirlabs/infra.git"

if ! git diff --quiet manifests/cloudflared/values.yaml; then
  git add manifests/cloudflared/values.yaml
  git commit -m "chore(cloudflared): auto-merge & group ingress"
  git push origin HEAD
else
  echo "ℹ️ No changes to commit."
fi

# === Cloudflare CNAME ===
echo "🌐 Creating CNAME records..."
CLOUDFLARE_API="https://api.cloudflare.com/client/v4"
TARGET="b50bbf48-0a2f-47ce-b73e-336b6718318b.cfargotunnel.com"

: "${CLOUDFLARE_API_TOKEN:?CLOUDFLARE_API_TOKEN not set}"
: "${CLOUDFLARE_ZONE_ID:?CLOUDFLARE_ZONE_ID not set}"

yq eval '.ingress' "$GENERATED_FILE" | yq -o=json | jq -c '.[]' | while read -r record; do
  name=$(echo "$record" | jq -r '.hostname' | sed 's/\.dvirlabs\.com//')
  exists=$(curl -s -X GET "$CLOUDFLARE_API/zones/$CLOUDFLARE_ZONE_ID/dns_records?type=CNAME&name=$name.dvirlabs.com" \
    -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" -H "Content-Type: application/json" | jq '.result | length')

  if [ "$exists" -eq 0 ]; then
    echo "➕ Creating $name.dvirlabs.com → $TARGET"
    curl -s -X POST "$CLOUDFLARE_API/zones/$CLOUDFLARE_ZONE_ID/dns_records" \
      -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
      -H "Content-Type: application/json" \
      --data "{
        \"type\": \"CNAME\",
        \"name\": \"$name\",
        \"content\": \"$TARGET\",
        \"ttl\": 1,
        \"proxied\": true
      }" > /dev/null
  else
    echo "⚠️  $name.dvirlabs.com already exists"
  fi
done