#!/bin/sh

# Define input and output files
URL="https://unicode.org/Public/emoji/latest/emoji-test.txt"
INPUT_FILE="${XDG_DATA_HOME:-${HOME}/.local/share}/thesiah/char/emoji_raw"
TEMP_FILE="${XDG_DATA_HOME:-${HOME}/.local/share}/thesiah/char/emoji_temp"
OUTPUT_FILE="${XDG_DATA_HOME:-${HOME}/.local/share}/thesiah/char/emoji"

# Create the directory for output files if it doesn't exist
mkdir -p "$(dirname "$INPUT_FILE")"

# Download the emoji file
echo "Downloading emoji-test.txt from Unicode..."
if curl -o "$INPUT_FILE" -L "$URL"; then
  echo "Download complete! File saved to: $INPUT_FILE"
else
  echo "Failed to download emoji"
  exit 1
fi

awk '
    # Skip empty lines and comments
    /^[[:space:]]*$/ || /^#/ { next }

    # Keep only fully-qualified lines
    !/(fully-qualified|component)/ { next }

    # Skip lines containing 200D (zero-width joiner)
    /200D/ { next }

    # Skip lines containing components
    $2 ~ /1F3F[BCDEF]/ { next }

    # Print valid lines
    { print }
' "$INPUT_FILE" >"$TEMP_FILE"

# Second stage: Extract emoji and description
awk -F'#' '
    {
        if (NF >= 2) {
            full_data = $2                                 # Extract the emoji and description (after #)
            gsub(/^[[:space:]]+|[[:space:]]+$/, "", full_data)  # Trim spaces around the entire field

            split(full_data, parts, " ")                  # Split into parts by spaces
            emoji = parts[1]                              # First part is the emoji

            # Reconstruct description from parts[3] onward
            description = ""
            for (i = 3; i <= length(parts); i++) {
                description = description parts[i] " "
            }

            # Remove excessive internal spaces and trim description
            gsub(/[[:space:]]+/, " ", description)
            gsub(/^[[:space:]]+|[[:space:]]+$/, "", description)

            # Print emoji and description
            print emoji, description
        }
    }
' "$TEMP_FILE" >"$OUTPUT_FILE"

rm -rf "$INPUT_FILE" "$TEMP_FILE"
echo "Processing complete! File saved to: $OUTPUT_FILE"