#!/usr/bin/env bash
#
# Apply our patches + overlay onto the pristine upstream submodules.
#
# Fails loudly if a patch no longer applies (i.e. upstream moved after a
# submodule bump), so you know exactly which patch to refresh. Idempotent:
# it resets each submodule's tracked files to the pinned commit first.
#
set -euo pipefail
ROOT="$(cd "$(dirname "$0")/.." && pwd)"
cd "$ROOT"

echo "==> Ensuring submodules are initialised & at pinned commits"
git submodule update --init --recursive

apply_patches() {
    local name="$1" dir="$2"
    if [ ! -d "patches/$name" ]; then return; fi

    echo "==> [$name] resetting to pinned commit"
    git -C "$dir" checkout -- . 2>/dev/null || true
    git -C "$dir" clean -fd -e node_modules 2>/dev/null || true

    echo "==> [$name] applying patches"
    local applied=0
    for patch in patches/"$name"/*.patch; do
        [ -e "$patch" ] || continue
        echo "  - $(basename "$patch")"
        # --3way lets git fall back to a merge if context shifted slightly.
        git -C "$dir" apply --3way "$ROOT/$patch"
        applied=$((applied + 1))
    done
    echo "==> [$name] $applied patch(es) applied"
}

apply_patches ui httptoolkit-ui
apply_patches server httptoolkit-server

echo "==> Copying overlay files into httptoolkit-server"
cp -v overlay/server/htk-entry.ts        httptoolkit-server/htk-entry.ts
cp -v overlay/server/src/htk-app.ts      httptoolkit-server/src/htk-app.ts
cp -v overlay/server/src/commands/app.ts httptoolkit-server/src/commands/app.ts

echo "==> apply.sh complete."