# Babysitter user profile for Pi/agent workflows.
{
  config,
  lib,
  ...
}: let
  cfg = config.coding.agents.babysitter;
  defaultTimestamp = "2026-05-29T00:00:00.000Z";

  defaultUserProfile = {
    name = config.home.username;
    specialties = [
      {
        domain = "declarative-system-configuration";
        subdomains = ["nix" "home-manager" "agents"];
      }
    ];
    expertiseLevels = {};
    goals = [
      {
        id = "goal-agents-declarative-profile";
        description = "Keep Babysitter user preferences declarative and reproducible across systems.";
        category = "agents";
        priority = "medium";
        status = "active";
      }
    ];
    preferences = {
      verbosity = "concise";
      autonomyLevel = "semi-autonomous";
      riskTolerance = "conservative";
    };
    toolPreferences = {
      packageManagers = ["nix"];
      languages = ["nix"];
      operatingSystem = "nixos";
    };
    breakpointTolerance = {
      global = "moderate";
      skipBreakpointsForKnownPatterns = false;
      alwaysBreakOn = ["destructive-operations" "secrets" "external-publication"];
    };
    communicationStyle = {
      tone = "technical";
      language = "en";
      useEmojis = false;
      explanationDepth = "brief";
      preferredResponseFormat = "markdown";
    };
    experience = {};
    installedPlugins = ["babysitter-pi"];
    installedSkills = ["babysit" "call" "plan" "resume" "doctor" "yolo"];
    installedAgents = [];
    createdAt = defaultTimestamp;
    updatedAt = defaultTimestamp;
    version = 1;
  };

  effectiveProfile = lib.recursiveUpdate cfg.profile cfg.profileOverrides;
  profileJsonTarget = "${cfg.profileDirectory}/user-profile.json";
  profileMarkdownTarget = "${cfg.profileDirectory}/user-profile.md";
  profilePreferences = effectiveProfile.preferences or {};
  profileBreakpointTolerance = effectiveProfile.breakpointTolerance or {};

  listMarkdown = values:
    lib.concatMapStringsSep "\n" (value: "- ${toString value}") values;

  specialtyDomains = map (specialty: specialty.domain or "unspecified") (effectiveProfile.specialties or []);

  profileMarkdown = ''
    # Babysitter User Profile

    This file is generated by Home Manager from `coding.agents.babysitter`.

    - Name: ${effectiveProfile.name or "unspecified"}
    - Breakpoint tolerance: ${profileBreakpointTolerance.global or "unspecified"}
    - Autonomy level: ${profilePreferences.autonomyLevel or "unspecified"}
    - Risk tolerance: ${profilePreferences.riskTolerance or "unspecified"}

    ## Specialties

    ${listMarkdown specialtyDomains}

    ## Installed Babysitter Pi Skills

    ${listMarkdown (effectiveProfile.installedSkills or [])}
  '';
in {
  options.coding.agents.babysitter = {
    enable = lib.mkEnableOption "Babysitter user profile for Pi/agent workflows";

    profileDirectory = lib.mkOption {
      type = lib.types.str;
      default = ".a5c";
      description = ''
        Home-relative directory where Babysitter reads the user profile.
        Babysitter Pi documents the user profile at ~/.a5c/user-profile.json.
      '';
    };

    profile = lib.mkOption {
      type = lib.types.attrsOf lib.types.anything;
      default = defaultUserProfile;
      description = "Complete non-secret Babysitter user profile JSON.";
    };

    profileOverrides = lib.mkOption {
      type = lib.types.attrsOf lib.types.anything;
      default = {};
      description = ''
        Recursive overrides merged into the default Babysitter user profile.
        Keep this non-secret; the result is written into the Nix store.
      '';
    };
  };

  config = lib.mkIf cfg.enable {
    assertions = [
      {
        assertion = cfg.profileDirectory != "" && !lib.hasPrefix "/" cfg.profileDirectory;
        message = "coding.agents.babysitter.profileDirectory must be a non-empty home-relative path.";
      }
      {
        assertion = effectiveProfile ? name && builtins.isString effectiveProfile.name;
        message = "coding.agents.babysitter profile must include a string name.";
      }
      {
        assertion = effectiveProfile ? specialties && builtins.isList effectiveProfile.specialties;
        message = "coding.agents.babysitter profile must include a specialties list.";
      }
      {
        assertion = effectiveProfile ? breakpointTolerance && effectiveProfile.breakpointTolerance ? global;
        message = "coding.agents.babysitter profile must include breakpointTolerance.global.";
      }
    ];

    home.file = {
      "${profileJsonTarget}".text = builtins.toJSON effectiveProfile + "\n";
      "${profileMarkdownTarget}".text = profileMarkdown;
    };
  };
}