#!/usr/bin/env bash
# Drive and narrate the Hermes automated-triage demo.
#
# This is the autonomous loop: a build fails, Ariadne diagnoses it through
# Hermes, authorizes a predefined repair, performs it, and rebuilds green
# without a human touching anything.
#
#   hermes_triage_demo.sh monitor    # follow the Test Automation Diagram live
#   hermes_triage_demo.sh reset      # restore the demo to its pre-run state
#   hermes_triage_demo.sh preflight  # confirm the lab is ready to demo
#   hermes_triage_demo.sh run        # arm the failure and narrate the loop
#   hermes_triage_demo.sh status     # current incident/alert state, no changes
#
# The code-proposal demo is a separate script: hermes_code_demo.sh. They prove
# different halves of the diagram and reset different things, so they are kept
# apart rather than behind one command.
#
# FIRST RUN: copy hermes_demo.env.example to hermes_demo.env in this directory
# and fill it in. That file is git-ignored precisely so it can hold real
# tokens; this script sources it automatically.
#
# Needs kubectl access to the cluster as well. Nothing here mutates the cluster
# directly: the demo only asks Jenkins to run a parameterized build.
set -euo pipefail

# shellcheck source=scripts/ops/hermes_demo_lib.sh
. "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/hermes_demo_lib.sh"

# The fixture is a ConfigMap the demo job reads. Resetting it is the whole
# blast radius of this script: no repository is touched, because the triage
# loop repairs infrastructure rather than source.
cmd_reset() {
  say "Reset — restoring the triage demo to its pre-run state"
  note "fixture -> healthy"
  if kubectl -n "$DEMO_NS" patch cm hermes-triage-demo-fixture \
      --type merge -p '{"data":{"state":"healthy"}}' >/dev/null 2>&1; then
    note "  fixture: $(kubectl -n "$DEMO_NS" get cm hermes-triage-demo-fixture -o jsonpath='{.data.state}')"
  else
    note "  fixture patch failed (is the demo namespace present?)"
  fi
  say "Ready"
  note "no repository was touched; this demo repairs infrastructure, not source"
  note "run 'preflight' next, then 'run'"
}

cmd_preflight() {
  require_jenkins
  say "Preflight — triage demo"
  note "fixture state: $(kubectl -n "$DEMO_NS" get cm hermes-triage-demo-fixture -o jsonpath='{.data.state}' 2>/dev/null || echo MISSING)"
  shared_preflight
}

cmd_status() {
  shared_status
  say "Demo namespace"
  kubectl -n "$DEMO_NS" get jobs --no-headers 2>/dev/null | sed 's/^/        /'
}

cmd_run() {
  require_jenkins
  local start_num next_num
  start_num="$(last_build_number "$FIXTURE_JOB")"
  next_num=$((start_num + 1))
  say "Arming the demo failure (SEED_FAILURE=true) -> build #$next_num"
  note "HTTP $(jenkins_post "/job/$FIXTURE_JOB/buildWithParameters?SEED_FAILURE=true")"
  note "Only manual step. Everything after this is automatic."

  say "Waiting for the seeded build to fail"
  note "result: $(wait_for_build "$FIXTURE_JOB" "$next_num")"

  say "Ariadne detects, gathers evidence, asks Hermes, authorizes, repairs"
  note "the repair is a single in-process ConfigMap patch, so watch the fixture"
  for _ in $(seq 1 40); do
    sleep 10
    if [ "$(kubectl -n "$DEMO_NS" get cm hermes-triage-demo-fixture -o jsonpath='{.data.state}' 2>/dev/null)" = "healthy" ]; then
      note "fixture patched back to healthy"
      break
    fi
  done
  ariadne_ticks 400 4

  say "Ariadne triggers one rebuild with seeding disabled"
  note "result: $(wait_for_build "$FIXTURE_JOB" $((next_num + 1)))"

  say "Resolution"
  sleep 45
  ariadne_ticks 200 3
  note "fixture state: $(kubectl -n "$DEMO_NS" get cm hermes-triage-demo-fixture -o jsonpath='{.data.state}')"
}

case "${1:-}" in
  run|fixture) cmd_run ;;
  status) cmd_status ;;
  preflight) cmd_preflight ;;
  reset) cmd_reset ;;
  monitor) run_monitor "$FIXTURE_JOB" ;;
  *) sed -n '2,17p' "$0" | sed 's/^# \{0,1\}//' ; exit 1 ;;
esac