#!/bin/sh
set -e

TARGET_DIR="/data/gitea"
CHECK_INTERVAL=${CHECK_INTERVAL:-86400} # Default: re-check every 24 hours

sync_theme() {
    echo "[Theme Syncer] Checking for latest theme release..."
    RELEASE_JSON=$(curl -s https://api.github.com/repos/lutinglt/gitea-github-theme/releases/latest)

    TAG_NAME=$(echo "$RELEASE_JSON" | jq -r '.tag_name // empty')
    if [ -z "$TAG_NAME" ] || [ "$TAG_NAME" = "null" ]; then
        echo "[Theme Syncer] Could not reach GitHub API or parse release. Will retry later."
        return 0
    fi

    echo "[Theme Syncer] Processing theme release: $TAG_NAME"

    CSS_URLS=$(echo "$RELEASE_JSON" | jq -r '.assets[] | select(.name | endswith(".css")) | .browser_download_url')
    TMPL_URL=$(echo "$RELEASE_JSON" | jq -r '.assets[] | select(.name | test("template.*\\.zip")) | .browser_download_url' | head -n 1)

    mkdir -p "$TARGET_DIR/public/assets/css" "$TARGET_DIR/templates"

    for url in $CSS_URLS; do
        fname=$(basename "$url")
        echo "[Theme Syncer] Syncing CSS: $fname"
        curl -sL "$url" -o "$TARGET_DIR/public/assets/css/$fname"
    done

    if [ -n "$TMPL_URL" ] && [ "$TMPL_URL" != "null" ]; then
        echo "[Theme Syncer] Syncing templates..."
        curl -sL "$TMPL_URL" -o /tmp/templates.zip
        unzip -qo /tmp/templates.zip -d "$TARGET_DIR/templates/"
        rm -f /tmp/templates.zip
    fi

    if [ -n "$USER_UID" ] && [ -n "$USER_GID" ]; then
        chown -R "$USER_UID:$USER_GID" "$TARGET_DIR/public" "$TARGET_DIR/templates"
    fi

    echo "[Theme Syncer] Sync complete for $TAG_NAME."
}

sync_theme

while true; do
    sleep "$CHECK_INTERVAL"
    sync_theme
done