#!/bin/bash

# Function to prompt for input with a default value
prompt() {
    local prompt_text="$1"
    local default_val="$2"
    local var_name="$3"
    
    if [ -n "$default_val" ]; then
        read -p "$prompt_text [$default_val]: " input
        eval $var_name="\${input:-$default_val}"
    else
        read -p "$prompt_text: " input
        eval $var_name="\$input"
    fi
}

# --- 1. Gather Event Details ---
echo "--- New Event Wizard ---"
prompt "Event Name" "" EVENT_NAME
prompt "Date (YYYY-MM-DD)" "$(date +%Y-%m-%d)" EVENT_DATE
prompt "Time (e.g. 6-9 PM)" "6-9 PM" EVENT_TIME
prompt "Location" "Engineering IV, Maxwell Room (57-124)" EVENT_LOCATION
prompt "Ping Preference (1: @everyone, 2: @UCLA, 3: None)" "3" PING_CHOICE

case $PING_CHOICE in
    1) PING_TEXT="@everyone" ;;
    2) PING_TEXT="<@&1000205372327481444>" ;; # Assuming @UCLA role ID, replace if known or use generic
    *) PING_TEXT="" ;;
esac

echo "Enter Description (Markdown supported). Press Ctrl+D on a new line to finish:"
EVENT_DESCRIPTION=$(cat)
echo "" # Add newline after input

# Slugify event name for filename
SLUG=$(echo "$EVENT_NAME" | iconv -t ascii//TRANSLIT | sed -r s/[^a-zA-Z0-9]+/-/g | sed -r s/^-+\|-+$//g | tr A-Z a-z)
FILENAME="content/events/${SLUG}.md"

# --- 2. Generate Hugo Content ---
echo "Generating $FILENAME..."

cat <<EOF > "$FILENAME"
---
title: "$EVENT_NAME"
date: $(date +%Y-%m-%d)
tags: [events]
author: LUG Board
---

$EVENT_DESCRIPTION

* **Date**: $EVENT_DATE
* **Time**: $EVENT_TIME
* **Location**: $EVENT_LOCATION

EOF

echo "Hugo page created."

# --- 3. Discord Notification (Webhook) ---
# Check for env var or prompt
if [ -z "$DISCORD_WEBHOOK_URL" ]; then
    prompt "Enter Discord Webhook URL (leave empty to skip)" "" DISCORD_WEBHOOK_URL
fi

if [ -n "$DISCORD_WEBHOOK_URL" ]; then
    echo "Sending Discord announcement..."
    
    # Construct JSON payload
    # Note: Using jq would be safer, but manual construction avoids dependencies if simple
    # Escaping quotes in description for JSON
    SAFE_DESC=$(echo "$EVENT_DESCRIPTION" | sed 's/"/\\"/g' | sed ':a;N;$!ba;s/\n/\\n/g')
    
    JSON_PAYLOAD=$(cat <<EOF
{
  "content": "$PING_TEXT **New Event: $EVENT_NAME**",
  "embeds": [
    {
      "title": "$EVENT_NAME",
      "description": "$SAFE_DESC",
      "color": 5814783,
      "fields": [
        {
          "name": "When",
          "value": "$EVENT_DATE @ $EVENT_TIME",
          "inline": true
        },
        {
          "name": "Where",
          "value": "$EVENT_LOCATION",
          "inline": true
        }
      ]
    }
  ]
}
EOF
)
    curl -H "Content-Type: application/json" -d "$JSON_PAYLOAD" "$DISCORD_WEBHOOK_URL"
    echo -e "\nAnnouncement sent."
else
    echo "Skipping Discord announcement."
fi

# --- 4. Discord Calendar Event ---
# Requires Bot Token and Guild ID
if [ -z "$DISCORD_BOT_TOKEN" ]; then
    prompt "Enter Discord Bot Token (leave empty to skip calendar)" "" DISCORD_BOT_TOKEN
fi
if [ -z "$DISCORD_GUILD_ID" ] && [ -n "$DISCORD_BOT_TOKEN" ]; then
    prompt "Enter Discord Guild ID" "" DISCORD_GUILD_ID
fi

if [ -n "$DISCORD_BOT_TOKEN" ] && [ -n "$DISCORD_GUILD_ID" ]; then
    echo "Creating Discord Calendar Event..."
    
    # Need ISO8601 timestamp for start_time. 
    # Attempt to parse date and time. This is tricky in bash without strict format.
    # Assuming user input follows YYYY-MM-DD and roughly HH:MM format or we just use the date at a default time if parsing fails?
    # Let's try to be smart: Date + Start time.
    # Extract start time from "6-9 PM" -> "18:00"
    # This is a simplification. For robust parsing, might need python or date utils.
    
    # Extract start hour and minute
    START_HOUR=$(echo "$EVENT_TIME" | grep -oE '^[0-9]+' | head -1)
    START_MINUTE=$(echo "$EVENT_TIME" | grep -oE ':[0-9]+' | sed 's/://' | head -1)
    START_MINUTE=${START_MINUTE:-00}
    
    if [[ "$EVENT_TIME" == *"PM"* ]] && [ "$START_HOUR" -lt 12 ]; then
        START_HOUR=$((START_HOUR + 12))
    fi
    
    # Construct ISO string with timezone using date command
    START_DATE_STR="$EVENT_DATE $START_HOUR:$START_MINUTE"
    START_ISO=$(date -d "$START_DATE_STR" --iso-8601=seconds)
    
    # End time: Start + 2 hours
    # Use START_ISO as base to ensure correct calculation
    END_ISO=$(date -d "$START_ISO + 2 hours" --iso-8601=seconds)

    # Location Type 3 is "External"
    CAL_PAYLOAD=$(cat <<EOF
{
  "name": "$EVENT_NAME",
  "description": "$SAFE_DESC",
  "scheduled_start_time": "$START_ISO",
  "scheduled_end_time": "$END_ISO",
  "privacy_level": 2,
  "entity_type": 3,
  "entity_metadata": {
    "location": "$EVENT_LOCATION"
  }
}
EOF
)
    RESPONSE=$(curl -s -w "\n%{http_code}" -X POST "https://discord.com/api/v10/guilds/$DISCORD_GUILD_ID/scheduled-events" \
        -H "Authorization: Bot $DISCORD_BOT_TOKEN" \
        -H "Content-Type: application/json" \
        -d "$CAL_PAYLOAD")
        
    HTTP_BODY=$(echo "$RESPONSE" | head -n -1)
    HTTP_STATUS=$(echo "$RESPONSE" | tail -n 1)

    if [[ "$HTTP_STATUS" =~ ^2 ]]; then
        echo -e "\nCalendar event created."
    else
        echo -e "\nFailed to create calendar event. HTTP $HTTP_STATUS"
        echo "Response: $HTTP_BODY"
        echo "Payload: $CAL_PAYLOAD"
    fi
else
    echo "Skipping Calendar event."
fi

echo "Done!"