#!/usr/bin/env bash
# Active installation manuals must drive the canonical two-service base+profile stack.
set -euo pipefail

root="$(cd "$(dirname "$0")/.." && pwd -P)"
tmp="$(mktemp -d "${TMPDIR%/}/thoth-canonical-install.XXXXXX")"
trap 'rm -rf "$tmp"' EXIT HUP INT TERM

for retired_example in \
  "$root/docs/install/examples/local-compose.workspace-registry.yaml" \
  "$root/docs/install/examples/server-compose.workspace-registry.yaml" \
  "$root/docs/install/examples/git-ssh.workspace-registry.yaml" \
  "$root/docs/install/examples/git-https.workspace-registry.yaml"; do
  if [[ -e "$retired_example" ]]; then
    echo "superseded one-service install example remains active: ${retired_example#"$root/"}" >&2
    exit 1
  fi
done

printf '%s\n' '{}' >"$tmp/pi-auth.json"
printf '%s\n' 'THT_MODEL_API_KEY=fixture-model-api-key' >"$tmp/thothii.secrets"
chmod 0600 "$tmp/pi-auth.json" "$tmp/thothii.secrets"
mkdir -p "$tmp/data" "$tmp/pi-state" "$tmp/workspace-registry"
"$root/scripts/prepare-server-pi-state.sh" "$tmp/pi-state" "$(id -u)" "$(id -g)" >/dev/null
printf '%s\n' 'fixture-session-password' >"$tmp/session-runtime-password"
printf '%s\n' 'fixture-session-migrator-password' >"$tmp/session-migrator-password"
printf '%s\n' 'fixture-session-ca' >"$tmp/session-ca.pem"
cp "$root/deploy/workspaces/server-sessions.yaml.example" "$tmp/server-sessions.yaml"
chmod 0600 "$tmp/session-runtime-password" "$tmp/session-migrator-password" "$tmp/session-ca.pem"

for profile in local server; do
  env_file="$tmp/$profile.env"
  {
    printf '%s\n' \
      'THT_WORKSPACE_GIT_REMOTE=https://git.example.invalid/platform/thoth-workspaces.git' \
      "PI_AUTH_FILE=$tmp/pi-auth.json" \
      "THT_SECRETS_FILE=$tmp/thothii.secrets"
    if [[ "$profile" == server ]]; then
      printf '%s\n' \
        "THT_DATA_ROOT=$tmp/data" \
        "THT_PI_STATE_ROOT=$tmp/pi-state" \
        "THT_WORKSPACE_REGISTRY_ROOT=$tmp/workspace-registry" \
        "THT_SERVER_WORKSPACE_CONFIG=$tmp/server-sessions.yaml" \
        'THT_SESSION_DB_HOST=sessions.example.invalid' \
        'THT_SESSION_DB_NAME=thoth_sessions' \
        'THT_SESSION_RUNTIME_USER=thoth_sessions_app' \
        'THT_SESSION_MIGRATOR_USER=thoth_sessions_migrate' \
        "THT_SESSION_RUNTIME_PASSWORD_SOURCE=$tmp/session-runtime-password" \
        "THT_SESSION_MIGRATOR_PASSWORD_SOURCE=$tmp/session-migrator-password" \
        "THT_SESSION_CA_SOURCE=$tmp/session-ca.pem"
    fi
  } >"$env_file"

  compose_files=(-f "$root/compose.yaml" -f "$root/deploy/compose.$profile.yaml")
  if [[ "$profile" == server ]]; then
    compose_files+=(-f "$root/deploy/compose.session-server.yaml.example")
  fi
  docker compose --env-file "$env_file" "${compose_files[@]}" \
    config --format json >"$tmp/$profile.json"
  node - "$tmp/$profile.json" "$profile" <<'NODE'
const fs = require("fs");
const [path, profile] = process.argv.slice(2);
const config = JSON.parse(fs.readFileSync(path, "utf8"));
if (Object.keys(config.services).sort().join(",") !== "core,frontend") {
  throw new Error(profile + ": install stack must be exactly core,frontend");
}
if (!config.services.core.secrets?.some((secret) => secret.target === "thothii.secrets")) {
  throw new Error(profile + ": install stack lacks the runtime secret bundle");
}
if (!config.services.core.volumes?.some(
  (mount) => mount.target === "/home/thoth/.pi/agent/auth.json" && mount.read_only,
)) {
  throw new Error(profile + ": install stack lacks the read-only Pi auth file");
}
if ((config.services.frontend.secrets || []).length !== 0) {
  throw new Error(profile + ": frontend received runtime secrets");
}
if (profile === "server" && config.services.core.environment?.THT_SESSION_STORAGE !== "postgres") {
  throw new Error("server: public startup must include the PostgreSQL session override");
}
if (JSON.stringify(config).includes("fixture-model-api-key")) {
  throw new Error(profile + ": rendered Compose leaked a secret value");
}
NODE
done

for profile in local server; do
  manual="$root/docs/install/$profile-workspace-registry.md"
  grep -Fq -- '--env-file "$THT_OPERATOR_ENV"' "$manual" \
    && grep -Fq -- "-f \"\$THT_SOURCE_ROOT/compose.yaml\" -f \"\$THT_SOURCE_ROOT/deploy/compose.$profile.yaml\"" "$manual" || {
    echo "$profile manual lacks the canonical base+profile command" >&2
    exit 1
  }
  if rg -q 'local-compose\.workspace-registry|server-compose\.workspace-registry' "$manual"; then
    echo "$profile manual still references a superseded standalone Compose example" >&2
    exit 1
  fi
done

echo "canonical install Compose contract passed."