#!/usr/bin/env bash
set -euo pipefail

PERSON="${1:?Missing PERSON argument}"
HOST="alps:3222"
PROTOCOL="http"
REPO="babbarc/workspaces"
BRANCH="master"
LOG_FILE="/tmp/.gitops-router-${PERSON}.log"

# ─────────────────────────────────────────────
# ANSI color codes
readonly C_RESET='\033[0m'
readonly C_INFO='\033[1;34m'  # bold blue
readonly C_WARN='\033[1;33m'  # bold yellow
readonly C_ERROR='\033[1;31m' # bold red

# ─────────────────────────────────────────────
# log <level> <message...> with emojis
log() {
  local lvl="${1^^}"
  shift
  local icon color

  case "$lvl" in
  INFO) icon="ℹ️" color="$C_INFO" ;;
  WARN) icon="⚠️" color="$C_WARN" ;;
  ERROR) icon="❌" color="$C_ERROR" ;;
  *) icon="🔹" color="$C_RESET" ;;
  esac

  local ts
  ts="$(date '+%Y-%m-%d %H:%M:%S')"
  printf '%b%s [%s] [%s] %s%b\n' \
    "$color" "$icon" "$ts" "$lvl" "$*" "$C_RESET" |
    tee -a "$LOG_FILE"
}

# ─────────────────────────────────────────────
# Build the raw URL for fetching files
geturl() {
  local type="$1" file="$2"
  printf '%s://%s/%s/%s/branch/%s/%s\n' \
    "$PROTOCOL" "$HOST" "$REPO" "$type" "$BRANCH" "$file"
}

# ─────────────────────────────────────────────
# Run a local script
run() {
  local script="$1"
  "$HOME/.local/bin/$script"
}

# ─────────────────────────────────────────────
# Download & install an artifact
# update <file> <target-dir> <mode> [<type>]
update() {
  local file="$1" dir="$2" mode="$3" type="${4:-raw}"
  local url out

  out="$HOME/$dir/$(basename "$file")"
  url="$(geturl "$type" "$file")"

  [[ -f "$out" ]] && chmod 700 "$out"

  if curl -fsSL "$url" -o "$out"; then
    log info "Downloaded $url → $out"
    chmod "$mode" "$out"
  else
    log error "Failed to download $url"
    return 1
  fi
}

# ─────────────────────────────────────────────
# Clean up dangling podman images
clean_images() {
  local dangling
  dangling="$(podman images -f dangling=true -q)"
  if [[ -z "$dangling" ]]; then
    log info "No dangling images to remove."
  else
    log warn "Removing dangling images..."
    echo "$dangling" | xargs podman rmi
    log info "Dangling images removed."
  fi
}

# ─────────────────────────────────────────────
# Entry & command parsing
if [[ -z "${SSH_ORIGINAL_COMMAND:-}" ]]; then
  log error "No SSH_ORIGINAL_COMMAND provided."
  exit 1
fi

log info "SSH_ORIGINAL_COMMAND: $SSH_ORIGINAL_COMMAND"
read -r cmd arg <<<"$SSH_ORIGINAL_COMMAND"

# ─────────────────────────────────────────────
# Dispatch
case "$cmd" in
build)
  case "$arg" in
  base) run build-base.sh ;;
  workspace) run build-workspace.sh ;;
  *) log error "build: invalid arg '$arg'" ;;
  esac
  ;;
update)
  case "$arg" in
  base) update build-base.sh .local/bin 500 ;;
  workspace) update build-workspace.sh .local/bin 500 ;;
  access) update access.yml . 400 ;;
  ssh_router) update ssh_router.sh .local/bin 500 ;;
  gitops_router) update gitops_router.sh .local/bin 500 ;;
  home_tar) update home.tar.gz . 500 media ;;
  gitconfig) update gitconfig.template . 500 ;;
  *) log error "update: invalid arg '$arg'" ;;
  esac
  ;;
clean) clean_images ;;
status) podman images ;;
remove) podman rm "$arg" ;;
*)
  log error "Unknown command: '$cmd'"
  exit 127
  ;;
esac