# cc-ci.nix — everything on this host that exists FOR cc-ci, and nothing else.
#
# Split out of the orchestrator host config on 2026-08-20. The host it runs on is a general
# agent/orchestration box that also serves several unrelated projects; this module is the cc-ci
# part of it, so that the two can evolve (and be reviewed) independently. It is exported from this
# repo's flake as `nixosModules.cc-ci` and imported by whichever host runs cc-ci.
#
# All of it assumes the cc-ci workspaces exist on the host:
#   /srv/cc-ci        the loops workspace (+ .cc-ci-logs, upgrader.env)
#   /srv/cc-ci-orch   this repo (the orchestrator's own working dir)
# and that a `loops` user, tmux, python3 and the standalone claude/opencode CLIs are present —
# those are host concerns, provided by the host config, not by this module.
{ config, pkgs, lib, ... }:
{
  # cc-ci-loops supervisor — workspace staged 2026-05-31, so ENABLED for reboot-resilience.
  systemd.services.cc-ci-loops = {
    description = "cc-ci Builder/Adversary loops + watchdog (launch.sh start)";
    wantedBy = [ "multi-user.target" ];  # enabled after workspace staged (Hetzner cutover)
    after = [ "network-online.target" "tailscaled.service" "claude-install.service" ];
    wants = [ "network-online.target" ];
    serviceConfig = {
      # KillMode=process: this unit only LAUNCHES the tmux server, it does not own it. With the
      # default (control-group) systemd kills every leftover process in the cgroup when the unit
      # stops — and since one tmux server hosts every agent session on this host, a rebuild that
      # merely touched this unit wiped all of them (operator 2026-08-01). Only the (already
      # exited) main process is killed now; `systemctl stop` therefore does NOT tear down agents.
      KillMode = "process";
      Type = "oneshot"; RemainAfterExit = true;
      User = "loops"; Group = "users";
      WorkingDirectory = "/srv/cc-ci/cc-ci";
      # Append one line to REBOOTS.md per genuine reboot (boot_id-gated; not on manual restart).
      ExecStartPre = "${pkgs.bash}/bin/bash /srv/cc-ci/cc-ci-plan/reboot-log.sh";
    };
    # CLAUDE_BIN points at the standalone CLI installed by claude-install.service; the loops
    # backend defaults to claude (persisted in .loop-backend). Without this, launch.py's preflight
    # `which(claude)` fails because the systemd `path` below has no /home/loops/.local/bin.
    environment = { RESUME_PHASE = "1"; HOME = "/home/loops"; CLAUDE_BIN = "/home/loops/.local/bin/claude"; };
    path = [ pkgs.bash pkgs.tmux pkgs.git pkgs.python3 pkgs.openssh pkgs.nettools ];
    script = ''
      # Put the standalone claude/opencode binaries on PATH. On a cold boot this is the env the
      # tmux server (and thus every agent session) inherits, so bare `claude` resolves everywhere.
      export PATH="/home/loops/.local/bin:$PATH"
      [ -x /srv/cc-ci/cc-ci-plan/launch.sh ] && /srv/cc-ci/cc-ci-plan/launch.sh start || \
        echo "workspace not staged yet — skipping loop start"
    '';
  };

  # cc-ci-orchestrator supervisor — the operator's steering session. Same shape as
  # lichen-orchestrator / project-orchestrator above: this unit only LAUNCHES the orchestrator's
  # tmux session via the agent-orchestrator harness (cc-ci-plan/agents.py); it does not own the
  # session or the tmux server. The orchestrator agent is declared in cc-ci-plan/agents.toml on
  # the OPencode backend (backend = "opencode", model = "opencode/glm-5.2"), so on boot it
  # attaches to the shared opencode web server (opencode-web.service below) and is reachable for
  # Remote Control at https://oc.commoninternet.net under the /srv/cc-ci-orch project. The harness
  # watchdog (started by `agents.py up`) keeps it alive: heal-only (no stall reboots — a persistent
  # supervisor must not be killed just for idling). Added 2026-08-03 to give the cc-ci orchestrator
  # the same reboot-resilience the other two orchestrators already have.
  systemd.services.cc-ci-orchestrator = {
    description = "cc-ci orchestrator (operator steering session) — agents.py up orchestrator, opencode backend";
    wantedBy = [ "multi-user.target" ];
    after = [ "network-online.target" "tailscaled.service" "opencode-web.service" ];
    wants = [ "network-online.target" ];
    serviceConfig = {
      # KillMode=process: see the note on cc-ci-loops — a rebuild that merely touches this unit
      # must not tear down the (shared) tmux server and every agent session with it.
      KillMode = "process";
      Type = "oneshot"; RemainAfterExit = true;
      User = "loops"; Group = "users";
      WorkingDirectory = "/srv/cc-ci-orch";
    };
    environment = { HOME = "/home/loops"; };
    path = [ pkgs.bash pkgs.tmux pkgs.git pkgs.python3 pkgs.openssh pkgs.nettools ];
    script = ''
      export PATH="/home/loops/.local/bin:$PATH"
      proj="/srv/cc-ci-orch"
      echo "$(cat /proc/sys/kernel/random/boot_id) boot $(date -u +%FT%TZ) — cc-ci-orchestrator up" \
        >> "$proj/cc-ci-plan/.ao-boot.log" 2>/dev/null || true
      cd "$proj" && python3 cc-ci-plan/agents.py up orchestrator || echo "cc-ci orchestrator agents.py up failed"
    '';
  };

  # Weekly recipe upgrade — runs /upgrade-all over every enrolled recipe (opens recipe PRs
  # verified by !testme, never merges). Replaces the boot-fragile busybox-crond-in-tmux from
  # phase 5 §4 with a reboot-safe systemd timer. The service is timer-triggered only (NOT
  # wantedBy multi-user.target) so it never runs on boot/activation — only on the schedule.
  systemd.services.cc-ci-upgrade-all = {
    description = "cc-ci weekly /upgrade-all run (recipe upgrade survey + PRs, never merges)";
    after = [ "network-online.target" "tailscaled.service" "claude-install.service" ];
    wants = [ "network-online.target" ];
    serviceConfig = {
      Type = "oneshot";  # launch-upgrader.py spawns the cc-ci-upgrader tmux session and returns
      User = "loops"; Group = "users";
      WorkingDirectory = "/srv/cc-ci";
      # Optional per-run overrides for backend/model (LOOP_BACKEND, LOOP_MODEL, OPENCODE_SHARE,
      # UPGRADER_ARGS, …). The leading "-" makes it optional: absent file → claude/sonnet defaults.
      # Current config (as of 2026-08-16): the upgrader + report run on tinfoil/deepseek-v4-pro
      # (LOOP_MODEL + REPORT_MODEL in the env file); the hourly SUPERVISOR stays on glm-5.2
      # (SUPERVISOR_MODEL defaults to opencode-go/glm-5.2 in launch-supervisor.py, NOT overridden
      # here). Subagents bind deepseek via the cc-ci repo's opencode config. LOOP_TIER=zen is kept
      # so the tier check passes; the watchdog's usage-limit probe sends the deepseek model name to
      # the zen endpoint, which returns 200 (not 429) → resume immediately (correct: tinfoil has no
      # rolling usage limit to wait out). No rebuild needed to switch — the env file is read at each
      # timer fire. Holds no secrets (the tinfoil API key lives in the opencode config / auth.json).
      EnvironmentFile = "-/srv/cc-ci/upgrader.env";
    };
    environment = { HOME = "/home/loops"; CLAUDE_BIN = "/home/loops/.local/bin/claude"; };
    path = [ pkgs.bash pkgs.tmux pkgs.git pkgs.python3 pkgs.openssh pkgs.nettools ];
    script = ''
      export PATH="/home/loops/.local/bin:$PATH"
      python3 /srv/cc-ci/cc-ci-plan/launch-upgrader.py start >> /srv/cc-ci/.cc-ci-logs/upgrader-cron.log 2>&1
    '';
  };

  systemd.timers.cc-ci-upgrade-all = {
    description = "Weekly trigger for cc-ci-upgrade-all (Thursdays 22:00 America/New_York — Boston 10pm)";
    wantedBy = [ "timers.target" ];
    timerConfig = {
      # 10pm Thursday Boston time — DST-aware (EDT→02:00 UTC, EST→03:00 UTC) via the tz in OnCalendar.
      OnCalendar = "Thu *-*-* 22:00:00 America/New_York";
      Persistent = true;  # if the box was down at the scheduled time, run once on next boot
    };
  };

  # Hourly SUPERVISOR — a glm-5.2 orchestrator wake-up that keeps the weekly run on track. The
  # log-idle/429 watchdog only handles opencode-go usage-limit stalls; it does NOT cover a host
  # disk-full crash (which killed the 2026-07-03 run) or any other environmental wedge. This is a
  # CHEAP deterministic gate: if the weekly run is complete or actively progressing it does NOTHING
  # (zero model tokens). Only when a run has stalled/died before completing does it launch a
  # short-lived glm-5.2 agent that diagnoses the blockage and drives the run to a clean DONE.
  systemd.services.cc-ci-upgrade-supervisor = {
    description = "cc-ci hourly weekly-run supervisor (glm-5.2 — drives a stalled /upgrade-all to completion)";
    after = [ "network-online.target" "tailscaled.service" ];
    wants = [ "network-online.target" ];
    serviceConfig = {
      Type = "oneshot";  # launch-supervisor.py check: gate now, spawn the agent into tmux, return
      User = "loops"; Group = "users";
      WorkingDirectory = "/srv/cc-ci";
      # Shares the weekly run's optional override file (e.g. SUPERVISOR_MODEL=…); "-" = optional.
      EnvironmentFile = "-/srv/cc-ci/upgrader.env";
    };
    environment = { HOME = "/home/loops"; };
    path = [ pkgs.bash pkgs.tmux pkgs.git pkgs.python3 pkgs.openssh pkgs.nettools ];
    script = ''
      export PATH="/home/loops/.local/bin:$PATH"
      python3 /srv/cc-ci/cc-ci-plan/launch-supervisor.py check >> /srv/cc-ci/.cc-ci-logs/supervisor-cron.log 2>&1
    '';
  };

  systemd.timers.cc-ci-upgrade-supervisor = {
    description = "Hourly trigger for cc-ci-upgrade-supervisor (weekly-run health check + drive)";
    wantedBy = [ "timers.target" ];
    timerConfig = {
      OnCalendar = "*-*-* *:07:00";  # every hour at :07 (offset from the weekly :00 fire)
      Persistent = false;            # a missed hourly check is moot — the next hour re-checks
    };
  };
}