#!/usr/bin/env bash
#
# package-elastic-beanstalk.sh — build a normalized Elastic Beanstalk source
# bundle for the shoc-backend .NET 8 application. Generated .NET/EF binaries
# are not guaranteed to be byte-reproducible between separate builds.
#
# Layout of the resulting ZIP (the Beanstalk application root):
#   ./                          published Api.SeaHavenIndustries (self-contained, linux-x64)
#   ./efbundle                  self-contained EF Core 8.0.8 migrations bundle (linux-x64, +x)
#   ./.ebextensions/*           leader-only migration container command
#
# The bundle reads ConnectionStrings__DefaultConnection from the runtime
# environment (Elastic Beanstalk property). No connection string or secret is
# written into the package.
#
# The script only ever removes its own generated directory (.artifacts/elastic-beanstalk)
# and validates that path before doing so.
#
# Usage:
#   bash scripts/package-elastic-beanstalk.sh [output.zip]
#
# Environment:
#   DOTNET_BIN   optional path to the dotnet executable
#   RUNTIME      optional target RID for local validation (default: linux-x64)
set -euo pipefail

OUTPUT_ZIP="${1:-.artifacts/elastic-beanstalk/site.zip}"
STAGING_DIR=".artifacts/elastic-beanstalk/staging"
TOOLS_DIR=".artifacts/dotnet-tools"

log() { printf '\n\033[1m== %s ==\033[0m\n' "$1"; }
die() { printf '\033[31mERR\033[0m %s\n' "$1" >&2; exit 1; }

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

case "$OUTPUT_ZIP" in
  .artifacts/elastic-beanstalk/*.zip) : ;;
  *) die "output must be a .zip beneath .artifacts/elastic-beanstalk" ;;
esac

if [[ -n "${DOTNET_BIN:-}" ]]; then
  DOTNET="$DOTNET_BIN"
elif command -v dotnet >/dev/null 2>&1; then
  DOTNET="$(command -v dotnet)"
elif [[ -x "$HOME/.dotnet/dotnet" ]]; then
  DOTNET="$HOME/.dotnet/dotnet"
else
  die "dotnet is unavailable; set DOTNET_BIN or install the .NET 8 SDK."
fi

DOTNET_DIR="$(cd "$(dirname "$DOTNET")" && pwd)"
export PATH="$DOTNET_DIR:$PATH"
if [[ -d "$DOTNET_DIR/host/fxr" ]]; then
  export DOTNET_ROOT="$DOTNET_DIR"
fi

export DOTNET_CLI_TELEMETRY_OPTOUT=1
export DOTNET_NOLOGO=1
export TZ=UTC
export SOURCE_DATE_EPOCH="315532800"

API_PROJECT="Api.SeaHavenIndustries/Api.SeaHavenIndustries.csproj"
MIGRATIONS_PROJECT="Data.SeaHavenIndustries/Data.SeaHavenIndustries.csproj"
EF_VERSION="8.0.8"
RUNTIME="${RUNTIME:-linux-x64}"

[[ -f "$API_PROJECT" ]] || die "missing API project: $API_PROJECT"
[[ -f "$MIGRATIONS_PROJECT" ]] || die "missing migrations project: $MIGRATIONS_PROJECT"

log "resolve commit SHA for release metadata"
COMMIT_SHA="${APP_COMMIT_SHA:-${GITHUB_SHA:-}}"
if [[ ! "$COMMIT_SHA" =~ ^[0-9a-fA-F]{40}$ ]] && command -v git >/dev/null 2>&1; then
  GIT_SHA="$(git rev-parse HEAD 2>/dev/null || true)"
  if [[ "$GIT_SHA" =~ ^[0-9a-fA-F]{40}$ ]]; then
    COMMIT_SHA="$GIT_SHA"
  fi
fi
if [[ ! "$COMMIT_SHA" =~ ^[0-9a-fA-F]{40}$ ]]; then
  if [[ "${CI:-false}" == "true" ]]; then
    die "CI build could not resolve a valid 40-hex commit SHA (APP_COMMIT_SHA/GITHUB_SHA/git)."
  fi
  die "could not resolve a valid 40-hex commit SHA (APP_COMMIT_SHA/GITHUB_SHA/git rev-parse HEAD)."
fi
COMMIT_SHA="$(printf '%s' "$COMMIT_SHA" | tr '[:upper:]' '[:lower:]')"
printf '  commit: %s\n' "$COMMIT_SHA"
if command -v zip >/dev/null 2>&1; then
  ARCHIVER="zip"
elif command -v python >/dev/null 2>&1; then
  ARCHIVER="python"
else
  die "zip or python is required to build the source bundle."
fi

GENERATED_ROOT="$(dirname "$STAGING_DIR")"
case "$GENERATED_ROOT" in
  .artifacts/elastic-beanstalk) : ;;
  *) die "refusing to remove unexpected generated dir: $GENERATED_ROOT" ;;
esac

log "clean generated artifacts"
rm -rf "$GENERATED_ROOT" "$TOOLS_DIR"
mkdir -p "$STAGING_DIR" "$TOOLS_DIR"

log "publish $API_PROJECT (Release, self-contained, $RUNTIME)"
"$DOTNET" publish "$API_PROJECT" \
  -c Release \
  --self-contained \
  --runtime "$RUNTIME" \
  -o "$STAGING_DIR" \
  -p:ContinuousIntegrationBuild=true \
  -p:UseAppHost=true \
  -p:SourceRevisionId="$COMMIT_SHA" \
  -p:InformationalVersion="shoc-backend@$COMMIT_SHA" \
  -p:IncludeSourceRevisionInInformationalVersion=false \
  -p:DebugType=portable \
  -p:DebugSymbols=true

log "install dotnet-ef $EF_VERSION (local tool path)"
if ! "$DOTNET" tool install dotnet-ef --version "$EF_VERSION" --tool-path "$TOOLS_DIR" 2>/dev/null; then
  "$DOTNET" tool update dotnet-ef --version "$EF_VERSION" --tool-path "$TOOLS_DIR"
fi
EF="$TOOLS_DIR/dotnet-ef"

log "build EF migrations bundle (self-contained, $RUNTIME)"
"$EF" migrations bundle \
  --project "$MIGRATIONS_PROJECT" \
  --startup-project "$API_PROJECT" \
  --configuration Release \
  --self-contained \
  --target-runtime "$RUNTIME" \
  --output "$STAGING_DIR/efbundle"

chmod 0755 "$STAGING_DIR/efbundle"

log "copy .ebextensions into bundle root"
mkdir -p "$STAGING_DIR/.ebextensions"
cp -R .ebextensions/. "$STAGING_DIR/.ebextensions/"

log "verify no committed secret placeholders survived publish"
if grep -rIEl -- 'Server=.*;.*Password=|AccountKey=|aws_secret|AKIA[0-9A-Z]{16}' "$STAGING_DIR" 2>/dev/null; then
  die "potential secret detected in publish output; refusing to package."
fi

log "assemble source bundle (contents, not the containing directory)"
if [[ "$ARCHIVER" == "zip" ]]; then
  (
    cd "$STAGING_DIR"
    # ZIP stores file mtimes. Normalize archive metadata; release immutability
    # comes from uploading this one build under a unique version label.
    find . -type f -exec touch -t 198001010000 {} +
    find . -type f -print | LC_ALL=C sort \
      | zip -q -X -@ "$REPO_ROOT/$OUTPUT_ZIP"
  )
else
  python - "$STAGING_DIR" "$REPO_ROOT/$OUTPUT_ZIP" <<'PY'
import pathlib
import stat
import sys
import zipfile

root = pathlib.Path(sys.argv[1])
output = pathlib.Path(sys.argv[2])
with zipfile.ZipFile(
    output,
    mode="w",
    compression=zipfile.ZIP_DEFLATED,
    compresslevel=9,
) as archive:
    for path in sorted(item for item in root.rglob("*") if item.is_file()):
        info = zipfile.ZipInfo(
            path.relative_to(root).as_posix(),
            date_time=(1980, 1, 1, 0, 0, 0),
        )
        info.compress_type = zipfile.ZIP_DEFLATED
        mode = path.stat().st_mode
        if path.name == "efbundle":
            mode |= stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
        info.external_attr = (mode & 0xFFFF) << 16
        archive.writestr(info, path.read_bytes(), compresslevel=9)
PY
fi

log "package written: $OUTPUT_ZIP"
printf '  contents: %d files\n' "$(find "$STAGING_DIR" -type f | wc -l | tr -d ' ')"
printf '  size: %s bytes\n' "$(wc -c < "$REPO_ROOT/$OUTPUT_ZIP" | tr -d ' ')"
printf '  efbundle: %s\n' "$(file -b "$STAGING_DIR/efbundle" 2>/dev/null || echo present)"