#!/usr/bin/env bash
# Builds and signs a WP-LIT-MCP release from the committed state; with --publish it also tags and publishes it.
#
#   bin/release.sh             dry run: checks, tests, build, signature, ZIP checks – publishes nothing
#   bin/release.sh --publish   additionally: git tag + push, Gitea release with ZIP and .sig, check of the result
#
# Needs: bsdtar, composer, curl, jq, php (sodium). For --publish a Gitea token with write access to the repository in
# $GITEA_TOKEN. The signing key (php bin/release-sign.php keygen) lives outside the repository.
#
# Environment: LIT_MCP_RELEASE_KEY (default ~/.config/wp-lit-mcp/release.key), LIT_MCP_DIVI_CHECK (command that must
# succeed before a release, default: ddev wp --user=janniclas lit-mcp divi-check).
set -euo pipefail

root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$root"

repo_url="https://git.loosen-it.de/janniclas.loosen/WP-LIT-MCP"
api="https://git.loosen-it.de/api/v1/repos/janniclas.loosen/WP-LIT-MCP"
key="${LIT_MCP_RELEASE_KEY:-$HOME/.config/wp-lit-mcp/release.key}"
divi_check="${LIT_MCP_DIVI_CHECK:-ddev wp --user=janniclas lit-mcp divi-check}"
publish=0
[[ "${1:-}" == "--publish" ]] && publish=1

fail() { echo "ABBRUCH: $*" >&2; exit 1; }
step() { echo "==> $*"; }

# --- 1. The three version places agree, the tree is committed, nothing is released twice ----------------------------
step "Version und Zustand prüfen"
version="$(sed -n "s/.*const VERSION = '\(.*\)';/\1/p" src/Plugin.php)"
[[ "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] || fail "Plugin::VERSION ist keine Version x.y.z: '$version'"
[[ "$(sed -n 's/^ \* Version: //p' wp-lit-mcp.php)" == "$version" ]] || fail "Header-Version in wp-lit-mcp.php weicht ab"
[[ "$(sed -n 's/^Stable tag: //p' readme.txt)" == "$version" ]] || fail "Stable tag in readme.txt weicht ab"
grep -q "^= $version =\$" readme.txt || fail "readme.txt hat keinen Changelog-Eintrag für $version"
[[ -z "$(git status --porcelain)" ]] || fail "Arbeitsbaum nicht sauber: erst committen, das ZIP entsteht aus HEAD"
! git rev-parse -q --verify "refs/tags/v$version" >/dev/null || fail "Tag v$version existiert schon"
[[ -r "$key" ]] || fail "Signierschlüssel fehlt: $key (php bin/release-sign.php keygen <Datei>)"
if [[ $publish -eq 1 ]]; then
    [[ -n "${GITEA_TOKEN:-}" ]] || fail "GITEA_TOKEN ist nicht gesetzt"
fi

# --- 2. Tests and the Divi check must be green ------------------------------------------------------------------------
step "Tests"
composer test
step "Divi-Prüfung ($divi_check)"
eval "$divi_check" || fail "Divi-Prüfung nicht grün: kein Release"

# --- 3. Build from the commit: git archive honours export-ignore, then production dependencies ----------------------
step "ZIP bauen"
work="$(mktemp -d)"
trap 'rm -rf "$work"' EXIT
mkdir "$work/wp-lit-mcp"
git archive HEAD | tar -x -C "$work/wp-lit-mcp"
(cd "$work/wp-lit-mcp" && composer install --no-dev --optimize-autoloader --no-interaction --quiet)
name="wp-lit-mcp-$version.zip"
mkdir -p dist
zip="$root/dist/$name"
rm -f "$zip" "$zip.sig"
(cd "$work" && bsdtar --format zip -cf "$zip" wp-lit-mcp)

# --- 4. Look into the ZIP like WordPress will: one folder, the plugin, its autoloader, the right version --------------
step "ZIP prüfen"
entries="$(bsdtar -tf "$zip")"
if grep -qv '^wp-lit-mcp/' <<<"$entries"; then fail "ZIP enthält Einträge außerhalb von wp-lit-mcp/"; fi
for need in wp-lit-mcp/wp-lit-mcp.php wp-lit-mcp/vendor/autoload_packages.php; do
    grep -qx "$need" <<<"$entries" || fail "Im ZIP fehlt $need"
done
if grep -qE '^wp-lit-mcp/(tests|bin|docs/superpowers|\.git)(/|$)' <<<"$entries"; then
    fail "Entwicklungsdateien im ZIP"
fi
[[ "$(bsdtar -xOf "$zip" wp-lit-mcp/wp-lit-mcp.php | sed -n 's/^ \* Version: //p')" == "$version" ]] \
    || fail "Version im ZIP stimmt nicht mit $version überein"

# --- 5. Sign, and prove the signature against the key built into the plugin -------------------------------------------
step "Signieren"
php bin/release-sign.php sign "$zip" "$key" > "$zip.sig"
php bin/release-sign.php verify "$zip" "$zip.sig" >/dev/null || fail "Signatur passt nicht zum Schlüssel im Plugin (PackageSignature::RELEASE_KEY)"

if [[ $publish -eq 0 ]]; then
    echo "Probelauf in Ordnung: dist/$name und dist/$name.sig"
    echo "Veröffentlichen: GITEA_TOKEN=… bin/release.sh --publish"
    exit 0
fi

# --- 6. Publish ---------------------------------------------------------------------------------------------------------
step "Tag v$version setzen und pushen"
git tag -a "v$version" -m "WP-LIT-MCP $version"
git push origin "v$version"

step "Release auf Gitea anlegen"
auth=(-H "Authorization: token $GITEA_TOKEN")
notes="$(awk -v header="= $version =" '$0 == header { on = 1; next } /^= / { on = 0 } on' readme.txt)"
release_id="$(curl -fsS "${auth[@]}" -H 'Content-Type: application/json' \
    -d "$(jq -n --arg tag "v$version" --arg body "$notes" '{tag_name: $tag, name: $tag, body: $body}')" \
    "$api/releases" | jq -r .id)"
for file in "$zip" "$zip.sig"; do
    curl -fsS "${auth[@]}" -F "attachment=@$file" "$api/releases/$release_id/assets?name=$(basename "$file")" >/dev/null
done

# --- 7. Check what a customer site will see: latest release, public asset URLs, a signature that verifies ------------
step "Ergebnis prüfen (ohne Token, wie eine Kundenseite)"
latest="$(curl -fsS "$api/releases/latest")"
[[ "$(jq -r .tag_name <<<"$latest")" == "v$version" ]] || fail "releases/latest liefert nicht v$version"
asset_url() { jq -r --arg n "$1" '.assets[] | select(.name == $n) | .browser_download_url' <<<"$latest"; }
zip_url="$(asset_url "$name")"
sig_url="$(asset_url "$name.sig")"
for url in "$zip_url" "$sig_url"; do
    [[ "$url" == "$repo_url/releases/download/"* ]] || fail "Asset-URL nicht wie erwartet: '$url'"
done
mkdir "$work/check"
curl -fsSL "$zip_url" -o "$work/check/$name"
curl -fsSL "$sig_url" -o "$work/check/$name.sig"
php bin/release-sign.php verify "$work/check/$name" "$work/check/$name.sig" >/dev/null \
    || fail "Heruntergeladenes Release besteht die Signaturprüfung nicht"

echo "Release v$version veröffentlicht: $repo_url/releases/tag/v$version"