#!/usr/bin/env bash
# Generates ArgoCD Application manifests (one per app folder) + an AppProject.
#
# Layout produced:
#   argocd/apps/project.yaml            -> AppProject "k3s-cluster" (sync-wave -1)
#   argocd/apps/<app>.yaml              -> Application for that app folder
#   argocd-bootstrap.yaml (repo root)   -> app-of-apps: syncs everything in argocd/apps/
#
# Bootstrap (one-time, after ArgoCD + cert-manager are installed):
#   kubectl apply -f argocd-bootstrap.yaml
#
# Re-run this script after adding/removing an app folder to regenerate the manifests.
set -euo pipefail

cd "$(dirname "$0")/.."   # repo root

REPO="${REPO:-https://git.rogi.casa/roger/k3s-cluster.git}"
REV="${REV:-main}"
APPS_DIR="argocd/apps"
mkdir -p "$APPS_DIR"

# app-name | namespace | path | recurse | validate
APPS=(
  "argocd|argocd|argocd|false|true"
  "cert-manager|cert-manager|cert-manager|true|true"
  "fava|fava|fava|true|true"
  "gitea|gitea|gitea|true|true"
  "glance|glance|glance|true|true"
  "gym-tracker|gym-tracker|gym-tracker|true|true"
  "homeassistant|home-assistant|homeassistant|true|true"
  "jellyfin|jellyfin|jellyfin|true|true"
  "litellm|litellm|litellm|true|true"
  "minecraft-server|minecraft|minecraft-server|true|true"
  "monitoring|monitoring|monitoring|true|true"
  "myorg-assistant|myorg-assistant|myorg-assistant|true|true"
  "n8n|n8n|n8n|true|true"
  "nas|nas-proxy|nas|true|true"
  "openwebui|openwebui|openwebui|true|true"
  "phoenix|phoenix|phoenix|true|false"
  "pihole|pihole|pihole|true|true"
  "platform-engineer|platform-engineer|platform-engineer|true|true"
  "qbittorrent|qbittorrent|qbittorrent|true|true"
  "vaultwarden|vaultwarden|vaultwarden|true|true"
)

# ---------------------------------------------------------------------------
# AppProject
# ---------------------------------------------------------------------------
cat > "$APPS_DIR/project.yaml" <<EOF
apiVersion: argoproj.io/v1alpha1
kind: AppProject
metadata:
  name: k3s-cluster
  namespace: argocd
  annotations:
    argocd.argoproj.io/sync-wave: "-1"
spec:
  description: Applications for the rogi.casa K3s cluster (managed in Git)
  sourceRepos:
    - ${REPO}
  destinations:
    - server: https://kubernetes.default.svc
      namespace: "*"
  clusterResourceWhitelist:
    - group: "*"
      kind: "*"
EOF

# ---------------------------------------------------------------------------
# One Application per app folder
# ---------------------------------------------------------------------------
gen_app() {
  local name="$1" ns="$2" path="$3" recurse="$4" validate="$5"
  local recurse_yaml validate_opts=""
  [ "$recurse" = "true" ] && recurse_yaml="      recurse: true" || recurse_yaml="      recurse: false"
  [ "$validate" = "false" ] && validate_opts=$'\n      - Validate=false'

  cat > "$APPS_DIR/${name}.yaml" <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: ${name}
  namespace: argocd
  annotations:
    argocd.argoproj.io/sync-wave: "0"
spec:
  project: k3s-cluster
  source:
    repoURL: ${REPO}
    targetRevision: ${REV}
    path: ${path}
    directory:
${recurse_yaml}
  destination:
    server: https://kubernetes.default.svc
    namespace: ${ns}
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
      - CreateNamespace=false${validate_opts}
EOF
}

for line in "${APPS[@]}"; do
  IFS='|' read -r name ns path recurse validate <<< "$line"
  gen_app "$name" "$ns" "$path" "$recurse" "$validate"
done

# ---------------------------------------------------------------------------
# Root "app-of-apps" bootstrap Application (uses the built-in default project)
# ---------------------------------------------------------------------------
cat > argocd-bootstrap.yaml <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: k3s-cluster-root
  namespace: argocd
  annotations:
    argocd.argoproj.io/sync-wave: "-1"
spec:
  project: default
  source:
    repoURL: ${REPO}
    targetRevision: ${REV}
    path: argocd/apps
    directory:
      recurse: true
  destination:
    server: https://kubernetes.default.svc
    namespace: argocd
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
      - CreateNamespace=false
EOF

echo "Generated $(find "$APPS_DIR" -name '*.yaml' | wc -l) files in $APPS_DIR/ and argocd-bootstrap.yaml"