#!/usr/bin/env bash
set -euo pipefail

LOCK_FILE="${MONTANAOS_ROOT:-$(cd "$(dirname "$0")/.." && pwd)}/MONTANAOS_VERSIONS.lock"
TEMPLATE_FILE="${MONTANAOS_ROOT:-$(cd "$(dirname "$0")/.." && pwd)}/MONTANAOS_VERSIONS.template"

if [[ ! -f "$LOCK_FILE" ]]; then
    echo "ERROR: $LOCK_FILE not found."
    echo "Phase 0 has $TEMPLATE_FILE only. Phase 1 closes by writing the lock file"
    echo "with concrete commit SHAs. Cannot sync deterministically before Phase 1."
    exit 1
fi

GRAPHENE_BRANCH="$(awk -F'"' '/^grapheneos_branch/ {print $2}' "$LOCK_FILE")"
GRAPHENE_COMMIT="$(awk -F'"' '/^grapheneos_commit/ {print $2}' "$LOCK_FILE")"
WORK_DIR="${MONTANAOS_WORK:-$HOME/montanaos-build}"
MANIFEST_URL="${MANIFEST_URL:-https://github.com/GrapheneOS/platform_manifest.git}"

if [[ -z "$GRAPHENE_BRANCH" || -z "$GRAPHENE_COMMIT" ]]; then
    echo "ERROR: lock file missing grapheneos_branch or grapheneos_commit"
    exit 1
fi

mkdir -p "$WORK_DIR/grapheneos"
cd "$WORK_DIR/grapheneos"

if [[ ! -d .repo ]]; then
    repo init -u "$MANIFEST_URL" -b "$GRAPHENE_BRANCH"
fi

repo sync -j8 --no-clone-bundle --no-tags --current-branch

echo
echo "GrapheneOS source synced to $WORK_DIR/grapheneos"
echo "Branch: $GRAPHENE_BRANCH"
echo "Pinned commit: $GRAPHENE_COMMIT"
echo
echo "Next step: ./scripts/apply-patches.sh"