#!/bin/bash

# blob:summary=Fetch a shared theme by link or id and apply it as blob-dynamic
# blob:args=<share-link-or-id>
# blob:examples=blob theme share https://wall-styles.vercel.app/?id=aB3xQ

dynamic_theme_dir="$HOME/.config/blob/themes/blob-dynamic"
base_url="${BLOB_THEME_URL:-https://wall-styles.vercel.app}"

input="$1"

if [ -z "$input" ]; then
  echo "Usage: blob-theme-share <share-link-or-id>" >&2
  exit 1
fi

if [[ $input == http*://* ]]; then
  host=$(echo "$input" | sed -E 's#^(https?://[^/]+).*#\1#')
  share_id=$(echo "$input" | grep -oE 'id=[A-Za-z0-9]+' | head -1 | cut -d= -f2)
  if [ -z "$share_id" ]; then
    echo "Error: no share id found in '$input'." >&2
    exit 1
  fi
  api="$host/api/theme?id=$share_id&format=toml"
else
  api="$base_url/api/theme?id=$input&format=toml"
fi

mkdir -p "$dynamic_theme_dir/backgrounds"

echo "Fetching theme..."
downloaded=$(mktemp)
if ! curl -fsSL "$api" -o "$downloaded"; then
  echo "Error: could not fetch the theme. The link may be expired (themes last one hour)." >&2
  rm -f "$downloaded"
  exit 1
fi

if ! grep -q '^background = ' "$downloaded"; then
  echo "Error: the response did not look like a valid colors.toml." >&2
  rm -f "$downloaded"
  exit 1
fi

mv "$downloaded" "$dynamic_theme_dir/colors.toml"

cat >"$dynamic_theme_dir/neovim.lua" <<'NEOVIM'
return {
  {
    "LazyVim/LazyVim",
    opts = {
      colorscheme = "tokyonight",
    },
  },
}
NEOVIM

blob-theme-set blob-dynamic

echo "Applied shared theme to blob-dynamic."