#!/usr/bin/env bash

# Host-side helpers: list selected/enabled targets before container runs.

print_scrape_config_plan() {
  local config_path=$1
  local action_label=$2
  shift 2
  local -a requested_targets=("$@")
  local target_names_json line name output_dir enabled_count

  [[ -f "$config_path" ]] || return 0

  printf '%s\n' "=== $action_label run plan ==="
  printf 'Config: %s\n' "$config_path"

  if (( ${#requested_targets[@]} > 0 )); then
    printf 'Targets (%s selected):\n' "${#requested_targets[@]}"
    for name in "${requested_targets[@]}"; do
      output_dir=$(jq -r --arg name "$name" '.targets[] | select(.name == $name) | .output_dir' "$config_path")
      mem=$(target_container_memory "$config_path" "$name" 2>/dev/null || true)
      if [[ -n "$mem" && "$mem" != "null" ]]; then
        printf '  - %s → %s (container_memory: %s)\n' "$name" "$output_dir" "$mem"
      else
        printf '  - %s → %s\n' "$name" "$output_dir"
      fi
    done
    return 0
  fi

  enabled_count=$(jq -r '[.targets[] | select(.enabled != false)] | length' "$config_path")
  printf 'Targets (%s enabled, all will run):\n' "$enabled_count"
  while IFS=$'\t' read -r name output_dir; do
    [[ -n "$name" ]] || continue
    printf '  - %s → %s\n' "$name" "$output_dir"
  done < <(jq -r '.targets[] | select(.enabled != false) | [.name, .output_dir] | @tsv' "$config_path")
}

enabled_target_names() {
  local config_path=$1
  jq -r '.targets[] | select(.enabled != false) | .name' "$config_path"
}

target_container_memory() {
  local config_path=$1
  local target_name=$2

  if [[ ! -f "$config_path" ]]; then
    printf '\n'
    return 0
  fi
  jq -r --arg name "$target_name" '
    .targets[]
    | select(.name == $name)
    | .container_memory // empty
  ' "$config_path"
}

apply_single_target_container_memory() {
  local config_path=$1
  local target_name=$2
  local mem=""

  [[ -n "$target_name" ]] || return 0
  if [[ -n "${DCE_CONTAINER_MEMORY:-}" && "${DCE_CONTAINER_MEMORY:-0}" != "0" ]]; then
    return 0
  fi

  mem=$(target_container_memory "$config_path" "$target_name")
  [[ -n "$mem" && "$mem" != "null" ]] || return 0

  export DCE_CONTAINER_MEMORY="$mem"
}