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

# === METADATA ===
SCRIPT_NAME="$(basename "$0")"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
SKILL_ROOT="$(dirname "$SCRIPT_DIR")"

# === CONFIGURATION ===
: "${OPERATOR_EMAIL:?OPERATOR_EMAIL required}"
: "${NODE_NAME:=node-a}"
: "${OUTPUT_DIR:=$SKILL_ROOT/outputs}"

# === FUNCTIONS ===
log_info()  { echo "[INFO]  $(date -Iseconds) $*"; }
log_warn()  { echo "[WARN]  $(date -Iseconds) $*" >&2; }
log_error() { echo "[ERROR] $(date -Iseconds) $*" >&2; }

preflight() {
    [[ -d "$OUTPUT_DIR" ]] || mkdir -p "$OUTPUT_DIR"
}

guide_pass_init() {
    echo ""
    echo "============================================"
    echo "  SECRETS ENROLLMENT - GUIDED SETUP"
    echo "  This is an INTERACTIVE process"
    echo "============================================"
    echo ""

    # Check if pass is already initialized
    if [[ -d "$HOME/.password-store" ]] && [[ -f "$HOME/.password-store/.gpg-id" ]]; then
        log_info "Pass store already initialized"
        local existing_gpg
        existing_gpg=$(cat "$HOME/.password-store/.gpg-id")
        echo "  Current GPG ID: $existing_gpg"
        echo ""
        read -p "Re-initialize with $OPERATOR_EMAIL? (y/N): " reinit
        if [[ "$reinit" != "y" && "$reinit" != "Y" ]]; then
            log_info "Keeping existing pass store"
            return 0
        fi
    fi

    echo "=== Step 1: Initialize Pass Store ==="
    echo ""
    echo "Run the following command to initialize pass with your GPG key:"
    echo ""
    echo "  pass init \"$OPERATOR_EMAIL\""
    echo ""
    read -p "Press Enter when you have completed this step..."

    # Verify
    if [[ ! -d "$HOME/.password-store" ]]; then
        log_warn "Pass store not detected at ~/.password-store"
        log_warn "Please verify initialization before continuing"
    else
        log_info "Pass store detected at $HOME/.password-store"
    fi
}

guide_structure_creation() {
    echo ""
    echo "=== Step 2: Create Password Structure ==="
    echo ""
    echo "Create the following password hierarchy for infrastructure secrets:"
    echo ""
    echo "  infrastructure/"
    echo "  +-- cloudflare/"
    echo "  |   +-- api-token"
    echo "  |   +-- tunnel-secret"
    echo "  +-- ssh/"
    echo "  |   +-- passphrase"
    echo "  +-- services/"
    echo "      +-- (future services)"
    echo ""
    echo "Commands to run (replace with your actual secrets):"
    echo ""
    echo "  pass insert infrastructure/cloudflare/api-token"
    echo "  pass insert infrastructure/cloudflare/tunnel-secret"
    echo ""
    echo "Note: You'll be prompted to enter each secret value."
    echo ""
    read -p "Press Enter when you have stored the critical secrets..."
}

guide_verify() {
    echo ""
    echo "=== Step 3: Verify Encryption/Decryption ==="
    echo ""
    echo "Test that you can retrieve a secret:"
    echo ""
    echo "  pass infrastructure/cloudflare/api-token"
    echo ""
    echo "This should display your API token (confirm it matches what you entered)."
    echo ""
    read -p "Press Enter when you have verified decryption works..."

    # Attempt to list pass contents
    if command -v pass &>/dev/null; then
        echo ""
        echo "=== Current Pass Store Contents ==="
        pass ls 2>/dev/null || log_warn "Could not list pass store"
        echo ""
    fi
}

guide_git_init() {
    echo ""
    echo "=== Step 4: Initialize Git for Pass Store (Optional) ==="
    echo ""
    echo "For version control of your encrypted passwords:"
    echo ""
    echo "  pass git init"
    echo ""
    echo "This enables automatic commits when passwords change."
    echo ""
    read -p "Press Enter to continue (skip if you prefer not to use git)..."
}

generate_manifest() {
    local manifest="$OUTPUT_DIR/secrets_manifest.json"

    cat > "$manifest" <<EOF
{
  "timestamp": "$(date -Iseconds)",
  "node": "$NODE_NAME",
  "pass_store": "$HOME/.password-store",
  "gpg_id": "$OPERATOR_EMAIL",
  "guided_enrollment": true,
  "structure": [
    "infrastructure/cloudflare/api-token",
    "infrastructure/cloudflare/tunnel-secret",
    "infrastructure/ssh/passphrase",
    "infrastructure/services/"
  ],
  "note": "Secrets are encrypted with GPG. Never store this manifest with actual secret values."
}
EOF
    log_info "Secrets manifest written to $manifest"
}

main() {
    preflight
    log_info "Starting $SCRIPT_NAME (INTERACTIVE GUIDED SETUP)..."

    guide_pass_init
    guide_structure_creation
    guide_verify
    guide_git_init
    generate_manifest

    echo ""
    echo "============================================"
    echo "  SECRETS ENROLLMENT COMPLETE"
    echo "============================================"
    echo ""
    echo "Your pass store is now configured."
    echo "Secrets are encrypted with your GPG key: $OPERATOR_EMAIL"
    echo ""

    log_info "Completed $SCRIPT_NAME"
}

[[ "${BASH_SOURCE[0]}" == "$0" ]] && main "$@"