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>
    /// #687: What the lead of this unit may approve for the agents below it; <c>null</c> means
    /// nothing — every approval goes to a human. Set only by a human.
    /// </summary>
    [JsonPropertyName("approvals")]
    public UnitApprovals? Approvals { get; set; }

    /// <summary>
    /// #693: How often the lead of this unit looks at the runs of the agents it leads;
    /// <c>null</c> means no spot checks. Set only by a human — checks cost the lead's runs.
    /// </summary>
    [JsonPropertyName("inspection")]
    public UnitInspection? Inspection { get; set; }

    /// <summary>
    /// #702: Operations that are put to a blind vote instead of the lead; <c>null</c> means none.
    /// Set only by a human — a vote is a deliberate loosening, not a default.
    /// </summary>
    [JsonPropertyName("votes")]
    public UnitVotes? Votes { get; set; }

    /// <summary>#691: The template the unit came from — its texts and rules are someone else's.</summary>
    [JsonPropertyName("templateOrigin")]
    public string? TemplateOrigin { get; set; }

    /// <summary>
    /// #692: Credentials the unit holds for its members, by tool and setting — a purchasing
    /// department with six agents needs the marketplace key once, not six times, and the
    /// accounts department never gets it. Every value is a secret, stored protected; a member's
    /// own non-empty value wins, and a credential grants no tool.
    /// </summary>
    [JsonPropertyName("credentials")]
    public Dictionary<string, Dictionary<string, string>>? Credentials { get; set; }
}

/// <summary>
/// #702: A vote — several agents check independently and vote blind before something happens.
/// Not opinions are counted but independent checks enforced: every voter looks at its own data.
/// </summary>
public sealed class UnitVotes
{
    /// <summary>The operations put to the vote: <c>Tool.operation</c>, or <c>Tool</c> for all of it.</summary>
    [JsonPropertyName("operations")]
    public List<string> Operations { get; set; } = [];

    /// <summary>The agents that vote. Whoever proposes the call does not vote on it.</summary>
    [JsonPropertyName("voters")]
    public List<string> Voters { get; set; } = [];

    /// <summary>Yes votes from which the call is approved.</summary>
    [JsonPropertyName("approveAt")]
    public int ApproveAt { get; set; } = 3;

    /// <summary>At this many yes votes or fewer, the call is rejected. Between the two, a human decides.</summary>
    [JsonPropertyName("rejectAt")]
    public int RejectAt { get; set; } = 1;

    /// <summary>Votes that must be cast for any result; 0 means <see cref="ApproveAt"/>. A missing vote is no yes.</summary>
    [JsonPropertyName("quorum")]
    public int Quorum { get; set; }

    /// <summary>How long the voters have; after that, what was cast is counted.</summary>
    [JsonPropertyName("hours")]
    public double Hours { get; set; } = 4;

    /// <summary>Votes a day for the unit — every vote costs a run per voter; beyond, the lead or a human decides.</summary>
    [JsonPropertyName("perDay")]
    public int PerDay { get; set; } = 10;

    [JsonIgnore]
    public TimeSpan Window => TimeSpan.FromHours(Math.Clamp(Hours, 0.25, 72));

    [JsonIgnore]
    public int EffectiveQuorum => Quorum > 0 ? Quorum : ApproveAt;

    /// <summary>Whether the vote covers the operation.</summary>
    public bool Covers(string tool, string? operation)
        => Operations.Any(o => string.Equals(o, tool, StringComparison.OrdinalIgnoreCase)
                               || (!string.IsNullOrWhiteSpace(operation)
                                   && string.Equals(o, $"{tool}.{operation}", StringComparison.OrdinalIgnoreCase)));
}

/// <summary>
/// #693: The spot checks of a unit's lead. Which run is checked is decided by the run id, not
/// by chance — the same run gets the same answer on every pass, and nobody can tell from inside
/// a run whether it will be looked at.
/// </summary>
public sealed class UnitInspection
{
    /// <summary>Share of ordinary runs that are checked, 0 to 1.</summary>
    [JsonPropertyName("rate")]
    public double Rate { get; set; } = 0.1;

    /// <summary>Share for a new agent, a new model, or the run after a failure.</summary>
    [JsonPropertyName("denseRate")]
    public double DenseRate { get; set; } = 0.5;

    /// <summary>How long an agent counts as new after its first run.</summary>
    [JsonPropertyName("newDays")]
    public int NewDays { get; set; } = 7;

    /// <summary>Checks a day for the whole unit — a lead that checks everything doubles the unit's costs.</summary>
    [JsonPropertyName("perDay")]
    public int PerDay { get; set; } = 5;
}

/// <summary>
/// #687: The limits within which a unit's lead approves instead of the human. They belong to
/// the unit, not to the lead as a person — otherwise the power moves with an agent that changes
/// its post, and a vacant lead would have none.
/// </summary>
public sealed class UnitApprovals
{
    /// <summary>
    /// The operations the lead may approve: <c>Tool.operation</c>, or <c>Tool</c> for all of its
    /// operations. A sub-unit can grant no more than every unit above it that grants anything.
    /// </summary>
    [JsonPropertyName("operations")]
    public List<string> Operations { get; set; } = [];

    /// <summary>Approvals the lead may give in 24 hours; beyond that the human decides.</summary>
    [JsonPropertyName("perDay")]
    public int PerDay { get; set; } = 20;

    /// <summary>How long the lead has; after that the call is the human's alone.</summary>
    [JsonPropertyName("hours")]
    public double Hours { get; set; } = 4;

    [JsonIgnore]
    public TimeSpan Window => TimeSpan.FromHours(Math.Clamp(Hours, 0.25, 72));

    /// <summary>Whether this grant covers the operation.</summary>
    public bool Covers(string tool, string? operation)
        => Operations.Any(o => string.Equals(o, tool, StringComparison.OrdinalIgnoreCase)
                               || (!string.IsNullOrWhiteSpace(operation)
                                   && string.Equals(o, $"{tool}.{operation}", StringComparison.OrdinalIgnoreCase)));
}

/// <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; }
}