#!/usr/bin/env bash

# .------------------------------------------------------------------------.
# | plancat:     Uses plan.cat's API to automate posting to your account   |
# |                                                                        |
# | License:     Blue Oak Model License 1.0.0                              |
# |              https://blueoakcouncil.org/license/1.0.0                  |
# |                                                                        |
# | Copyright:   https://640kb.neocities.org                               |
# |                                                                        |
# | 16 Jun 2026: Initial Release                                           |
# '------------------------------------------------------------------------'


# --- CONFIGURATION (Edit these values) -------------------------------------

USERNAME=""             # enter your username
URL="https://plan.cat"
EDITOR="tilde"          # enter terminal text editor name
PASSWORD=""             # Leave blank to be prompted or fill in "your_password"

# --- END CONFIGURATION -----------------------------------------------------



show_help() {
    cat << 'EOF'
 .------------------------------------------------------------------.
 | plancat: Automate your updates to plan.cat via the command line. |
 |                                                                  |
 | Retrieves your current .plan, loads it into your editor and      |
 | uploads the changes to plan.cat when the editor closes.          |
 |                                                                  |
 | Usage: plancat                - Edit and post your .plan         |
 |        plancat [-h | --help]  - Shows this help message          |
 |                                                                  |
 | Configuration:                                                   |
 |   1. Open this script in your editor manually.                   |
 |                                                                  |
 |   2. Update the "CONFIGURATION" section at the top:              |
 |      - USERNAME: Your plan.cat username                          |
 |      - PASSWORD: Leave BLANK to be prompted or enter password    |
 |      - EDITOR  : Your preferred terminal editor                  |
 |                                                                  |
 | Security Notes:                                                  |
 |   If PASSWORD is blank, you will be prompted to type it.         |
 |      (read -s: hidden input, not saved to history)               |
 |   If filled, it is stored in plain text in this script.          |
 |                                                                  |
 | Requirements:                                                    |
 |   curl, mktemp and a terminal text editor                        |
 |   Compatibility: Linux, macOS, *BSD                              |
 '------------------------------------------------------------------'
EOF
}

case "${1:-}" in
    -h|--help)
        show_help
        exit 0
        ;;
    "")

        ;;
    *)
        echo "Unknown option: $1"
        echo "Use '-h' or '--help' for usage information."
        exit 1
        ;;
esac


set -euo pipefail


if ! command -v "$EDITOR" &>/dev/null; then
    echo "Error: Editor '$EDITOR' not found in your PATH."
    echo "Please update the 'EDITOR' variable inside this script."
    exit 1
fi


if [[ -z "$PASSWORD" ]]; then

    echo "Password not set. Please enter your plan.cat password:"
    read -s PASSWORD
    echo ""
    if [[ -z "$PASSWORD" ]]; then
        echo "Error: Password cannot be empty."
        exit 1
    fi
fi


TMP_FILE=$(mktemp)


echo "Fetching current .plan..."
if ! curl -s -o "$TMP_FILE" "${URL}/~${USERNAME}"; then
    echo "Error: Failed to fetch current .plan file."
    rm -f "$TMP_FILE"
    exit 1
fi


echo "Editing with $EDITOR..."
"$EDITOR" "$TMP_FILE"


echo "Uploading..."
if ! curl -s -X POST -u "${USERNAME}:${PASSWORD}" \
    -F "plan=$(cat "$TMP_FILE")" \
    "${URL}/stdin"; then
    echo "Error: Upload failed. Check your username and password."
    rm -f "$TMP_FILE"
    exit 1
fi


rm -f "$TMP_FILE"
echo "Success! Your .plan has been updated at: ${URL}/~${USERNAME}"