using System.Text.Json.Serialization;

namespace ClawdDotNet.Core.Config;

/// <summary>
/// #683: A unit — department, team, group — as a node in the organisation tree.
///
/// <para><b>Stored in the instance configuration, next to the agents.</b> An agent's tools
/// already live there; a unit's rules belong beside them, so the truth about an agent is in
/// one place. Every structural change is written to the audit log by the administration,
/// which is what the concept asked the database for.</para>
///
/// <para><b>No value here overrides an agent at run time</b> (Organisation-Konzept, section
/// 3). <see cref="Defaults"/> are only the starting values for agents that join;
/// <see cref="ToolCeiling"/> is checked when an agent's tools are written, never laid over
/// them while it runs. What stands at the agent is what applies.</para>
/// </summary>
public sealed class UnitConfig
{
    [JsonPropertyName("id")]
    public string Id { get; set; } = "";

    [JsonPropertyName("name")]
    public string Name { get; set; } = "";

    /// <summary>The parent unit; <c>null</c> for a top-level unit.</summary>
    [JsonPropertyName("parentId")]
    public string? ParentId { get; set; }

    /// <summary>
    /// The agent leading this unit — one of its members. May be empty: then the nearest
    /// unit above that has a lead takes over.
    /// </summary>
    [JsonPropertyName("leaderAgentId")]
    public string? LeaderAgentId { get; set; }

    /// <summary>What the unit exists for — the top of every task chain in it (#714).</summary>
    [JsonPropertyName("goal")]
    public string Goal { get; set; } = "";

    /// <summary>
    /// The tools members of this unit may have at most; <c>null</c> means no ceiling. A
    /// ceiling applies to sub-units as well — the effective ceiling is the intersection
    /// along the path to the root.
    /// </summary>
    [JsonPropertyName("toolCeiling")]
    public List<string>? ToolCeiling { get; set; }

    /// <summary>Starting values for agents that join this unit.</summary>
    [JsonPropertyName("defaults")]
    public UnitDefaults Defaults { get; set; } = new();
}

/// <summary>
/// #683: What an agent gets when it joins a unit. <c>null</c> leaves the agent's own value.
/// Changing these does not touch existing members — writing a value into them is a
/// separate, previewed step.
/// </summary>
public sealed class UnitDefaults
{
    [JsonPropertyName("model")]
    public string? Model { get; set; }

    [JsonPropertyName("dailyCostUsd")]
    public decimal? DailyCostUsd { get; set; }

    [JsonPropertyName("dailyTokens")]
    public long? DailyTokens { get; set; }

    [JsonPropertyName("whenExhausted")]
    public string? WhenExhausted { get; set; }
}