// Copyright (c) StellaOps. All rights reserved.
// Licensed under the BUSL-1.1 license.

using System;
using System.Collections.Generic;
using System.Text.Json.Serialization;

namespace StellaOps.Cli.Services.Models.Chat;

/// <summary>
/// Output format for chat commands.
/// </summary>
internal enum ChatOutputFormat
{
    Table,
    Json,
    Markdown
}

/// <summary>
/// Chat query request sent to the AdvisoryAI chat API.
/// </summary>
internal sealed record ChatQueryRequest
{
    [JsonPropertyName("query")]
    public required string Query { get; init; }

    [JsonPropertyName("artifactDigest")]
    public string? ArtifactDigest { get; init; }

    [JsonPropertyName("imageReference")]
    public string? ImageReference { get; init; }

    [JsonPropertyName("environment")]
    public string? Environment { get; init; }

    [JsonPropertyName("conversationId")]
    public string? ConversationId { get; init; }

    [JsonPropertyName("userRoles")]
    public List<string>? UserRoles { get; init; }

    [JsonPropertyName("noAction")]
    public bool NoAction { get; init; } = true;

    [JsonPropertyName("includeEvidence")]
    public bool IncludeEvidence { get; init; }
}

/// <summary>
/// Chat query response from the AdvisoryAI chat API.
/// </summary>
internal sealed record ChatQueryResponse
{
    [JsonPropertyName("responseId")]
    public required string ResponseId { get; init; }

    [JsonPropertyName("bundleId")]
    public string? BundleId { get; init; }

    [JsonPropertyName("intent")]
    public required string Intent { get; init; }

    [JsonPropertyName("generatedAt")]
    public required DateTimeOffset GeneratedAt { get; init; }

    [JsonPropertyName("summary")]
    public required string Summary { get; init; }

    [JsonPropertyName("impact")]
    public ChatImpactAssessment? Impact { get; init; }

    [JsonPropertyName("reachability")]
    public ChatReachabilityAssessment? Reachability { get; init; }

    [JsonPropertyName("mitigations")]
    public List<ChatMitigationOption> Mitigations { get; init; } = [];

    [JsonPropertyName("evidenceLinks")]
    public List<ChatEvidenceLink> EvidenceLinks { get; init; } = [];

    [JsonPropertyName("confidence")]
    public required ChatConfidence Confidence { get; init; }

    [JsonPropertyName("proposedActions")]
    public List<ChatProposedAction> ProposedActions { get; init; } = [];

    [JsonPropertyName("followUp")]
    public ChatFollowUp? FollowUp { get; init; }

    [JsonPropertyName("diagnostics")]
    public ChatDiagnostics? Diagnostics { get; init; }
}

internal sealed record ChatImpactAssessment
{
    [JsonPropertyName("severity")]
    public string? Severity { get; init; }

    [JsonPropertyName("affectedComponents")]
    public List<string> AffectedComponents { get; init; } = [];

    [JsonPropertyName("description")]
    public string? Description { get; init; }
}

internal sealed record ChatReachabilityAssessment
{
    [JsonPropertyName("reachable")]
    public bool Reachable { get; init; }

    [JsonPropertyName("paths")]
    public List<string> Paths { get; init; } = [];

    [JsonPropertyName("confidence")]
    public double Confidence { get; init; }
}

internal sealed record ChatMitigationOption
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("title")]
    public required string Title { get; init; }

    [JsonPropertyName("description")]
    public string? Description { get; init; }

    [JsonPropertyName("effort")]
    public string? Effort { get; init; }

    [JsonPropertyName("recommended")]
    public bool Recommended { get; init; }
}

internal sealed record ChatEvidenceLink
{
    [JsonPropertyName("type")]
    public required string Type { get; init; }

    [JsonPropertyName("ref")]
    public required string Ref { get; init; }

    [JsonPropertyName("label")]
    public string? Label { get; init; }

    [JsonPropertyName("digest")]
    public string? Digest { get; init; }
}

internal sealed record ChatConfidence
{
    [JsonPropertyName("overall")]
    public double Overall { get; init; }

    [JsonPropertyName("evidenceQuality")]
    public double EvidenceQuality { get; init; }

    [JsonPropertyName("modelCertainty")]
    public double ModelCertainty { get; init; }
}

internal sealed record ChatProposedAction
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("tool")]
    public required string Tool { get; init; }

    [JsonPropertyName("description")]
    public required string Description { get; init; }

    [JsonPropertyName("parameters")]
    public Dictionary<string, object>? Parameters { get; init; }

    [JsonPropertyName("requiresConfirmation")]
    public bool RequiresConfirmation { get; init; }

    [JsonPropertyName("denied")]
    public bool Denied { get; init; }

    [JsonPropertyName("denyReason")]
    public string? DenyReason { get; init; }
}

internal sealed record ChatFollowUp
{
    [JsonPropertyName("suggestedQueries")]
    public List<string> SuggestedQueries { get; init; } = [];

    [JsonPropertyName("relatedTopics")]
    public List<string> RelatedTopics { get; init; } = [];
}

internal sealed record ChatDiagnostics
{
    [JsonPropertyName("tokensUsed")]
    public int TokensUsed { get; init; }

    [JsonPropertyName("processingTimeMs")]
    public long ProcessingTimeMs { get; init; }

    [JsonPropertyName("evidenceSourcesQueried")]
    public int EvidenceSourcesQueried { get; init; }
}

/// <summary>
/// Chat doctor response with quota and tool access status.
/// </summary>
internal sealed record ChatDoctorResponse
{
    [JsonPropertyName("tenantId")]
    public required string TenantId { get; init; }

    [JsonPropertyName("userId")]
    public required string UserId { get; init; }

    [JsonPropertyName("quotas")]
    public required ChatQuotaStatus Quotas { get; init; }

    [JsonPropertyName("tools")]
    public required ChatToolAccess Tools { get; init; }

    [JsonPropertyName("lastDenied")]
    public ChatDenialInfo? LastDenied { get; init; }
}

internal sealed record ChatQuotaStatus
{
    [JsonPropertyName("requestsPerMinuteLimit")]
    public int RequestsPerMinuteLimit { get; init; }

    [JsonPropertyName("requestsPerMinuteRemaining")]
    public int RequestsPerMinuteRemaining { get; init; }

    [JsonPropertyName("requestsPerMinuteResetsAt")]
    public DateTimeOffset RequestsPerMinuteResetsAt { get; init; }

    [JsonPropertyName("requestsPerDayLimit")]
    public int RequestsPerDayLimit { get; init; }

    [JsonPropertyName("requestsPerDayRemaining")]
    public int RequestsPerDayRemaining { get; init; }

    [JsonPropertyName("requestsPerDayResetsAt")]
    public DateTimeOffset RequestsPerDayResetsAt { get; init; }

    [JsonPropertyName("tokensPerDayLimit")]
    public int TokensPerDayLimit { get; init; }

    [JsonPropertyName("tokensPerDayRemaining")]
    public int TokensPerDayRemaining { get; init; }

    [JsonPropertyName("tokensPerDayResetsAt")]
    public DateTimeOffset TokensPerDayResetsAt { get; init; }
}

internal sealed record ChatToolAccess
{
    [JsonPropertyName("allowAll")]
    public bool AllowAll { get; init; }

    [JsonPropertyName("allowedTools")]
    public List<string> AllowedTools { get; init; } = [];

    [JsonPropertyName("providers")]
    public ChatToolProviders? Providers { get; init; }
}

internal sealed record ChatToolProviders
{
    [JsonPropertyName("sbom")]
    public bool Sbom { get; init; }

    [JsonPropertyName("vex")]
    public bool Vex { get; init; }

    [JsonPropertyName("reachability")]
    public bool Reachability { get; init; }

    [JsonPropertyName("policy")]
    public bool Policy { get; init; }

    [JsonPropertyName("findings")]
    public bool Findings { get; init; }
}

internal sealed record ChatDenialInfo
{
    [JsonPropertyName("timestamp")]
    public DateTimeOffset Timestamp { get; init; }

    [JsonPropertyName("reason")]
    public required string Reason { get; init; }

    [JsonPropertyName("code")]
    public string? Code { get; init; }

    [JsonPropertyName("query")]
    public string? Query { get; init; }
}

/// <summary>
/// Chat settings response.
/// </summary>
internal sealed record ChatSettingsResponse
{
    [JsonPropertyName("tenantId")]
    public required string TenantId { get; init; }

    [JsonPropertyName("userId")]
    public string? UserId { get; init; }

    [JsonPropertyName("scope")]
    public required string Scope { get; init; }

    [JsonPropertyName("quotas")]
    public ChatQuotaSettings? Quotas { get; init; }

    [JsonPropertyName("tools")]
    public ChatToolSettings? Tools { get; init; }

    [JsonPropertyName("effective")]
    public ChatEffectiveSettings? Effective { get; init; }
}

internal sealed record ChatQuotaSettings
{
    [JsonPropertyName("requestsPerMinute")]
    public int? RequestsPerMinute { get; init; }

    [JsonPropertyName("requestsPerDay")]
    public int? RequestsPerDay { get; init; }

    [JsonPropertyName("tokensPerDay")]
    public int? TokensPerDay { get; init; }

    [JsonPropertyName("toolCallsPerDay")]
    public int? ToolCallsPerDay { get; init; }
}

internal sealed record ChatToolSettings
{
    [JsonPropertyName("allowAll")]
    public bool? AllowAll { get; init; }

    [JsonPropertyName("allowedTools")]
    public List<string>? AllowedTools { get; init; }
}

internal sealed record ChatEffectiveSettings
{
    [JsonPropertyName("quotas")]
    public required ChatQuotaSettings Quotas { get; init; }

    [JsonPropertyName("tools")]
    public required ChatToolSettings Tools { get; init; }

    [JsonPropertyName("source")]
    public required string Source { get; init; }
}

/// <summary>
/// Chat settings update request.
/// </summary>
internal sealed record ChatSettingsUpdateRequest
{
    [JsonPropertyName("quotas")]
    public ChatQuotaSettingsUpdate? Quotas { get; init; }

    [JsonPropertyName("tools")]
    public ChatToolSettingsUpdate? Tools { get; init; }
}

internal sealed record ChatQuotaSettingsUpdate
{
    [JsonPropertyName("requestsPerMinute")]
    public int? RequestsPerMinute { get; init; }

    [JsonPropertyName("requestsPerDay")]
    public int? RequestsPerDay { get; init; }

    [JsonPropertyName("tokensPerDay")]
    public int? TokensPerDay { get; init; }

    [JsonPropertyName("toolCallsPerDay")]
    public int? ToolCallsPerDay { get; init; }
}

internal sealed record ChatToolSettingsUpdate
{
    [JsonPropertyName("allowAll")]
    public bool? AllowAll { get; init; }

    [JsonPropertyName("allowedTools")]
    public List<string>? AllowedTools { get; init; }
}

/// <summary>
/// Conversation list response from AdvisoryAI conversation endpoints.
/// </summary>
internal sealed record ChatConversationListResponse
{
    [JsonPropertyName("conversations")]
    public List<ChatConversationSummary> Conversations { get; init; } = [];

    [JsonPropertyName("totalCount")]
    public int TotalCount { get; init; }
}

internal sealed record ChatConversationSummary
{
    [JsonPropertyName("conversationId")]
    public required string ConversationId { get; init; }

    [JsonPropertyName("createdAt")]
    public DateTimeOffset CreatedAt { get; init; }

    [JsonPropertyName("updatedAt")]
    public DateTimeOffset UpdatedAt { get; init; }

    [JsonPropertyName("turnCount")]
    public int TurnCount { get; init; }

    [JsonPropertyName("preview")]
    public string? Preview { get; init; }
}

internal sealed record ChatConversationResponse
{
    [JsonPropertyName("conversationId")]
    public required string ConversationId { get; init; }

    [JsonPropertyName("tenantId")]
    public required string TenantId { get; init; }

    [JsonPropertyName("userId")]
    public required string UserId { get; init; }

    [JsonPropertyName("createdAt")]
    public DateTimeOffset CreatedAt { get; init; }

    [JsonPropertyName("updatedAt")]
    public DateTimeOffset UpdatedAt { get; init; }

    [JsonPropertyName("turns")]
    public List<ChatConversationTurn> Turns { get; init; } = [];
}

internal sealed record ChatConversationTurn
{
    [JsonPropertyName("turnId")]
    public required string TurnId { get; init; }

    [JsonPropertyName("role")]
    public required string Role { get; init; }

    [JsonPropertyName("content")]
    public required string Content { get; init; }

    [JsonPropertyName("timestamp")]
    public DateTimeOffset Timestamp { get; init; }

    [JsonPropertyName("evidenceLinks")]
    public List<ChatConversationEvidenceLink>? EvidenceLinks { get; init; }

    [JsonPropertyName("proposedActions")]
    public List<ChatConversationProposedAction>? ProposedActions { get; init; }
}

internal sealed record ChatConversationEvidenceLink
{
    [JsonPropertyName("type")]
    public required string Type { get; init; }

    [JsonPropertyName("uri")]
    public required string Uri { get; init; }

    [JsonPropertyName("label")]
    public string? Label { get; init; }

    [JsonPropertyName("confidence")]
    public double? Confidence { get; init; }
}

internal sealed record ChatConversationProposedAction
{
    [JsonPropertyName("actionType")]
    public required string ActionType { get; init; }

    [JsonPropertyName("label")]
    public required string Label { get; init; }

    [JsonPropertyName("policyGate")]
    public string? PolicyGate { get; init; }

    [JsonPropertyName("requiresConfirmation")]
    public bool RequiresConfirmation { get; init; }
}

internal sealed record ChatConversationExport
{
    [JsonPropertyName("generatedAt")]
    public DateTimeOffset GeneratedAt { get; init; }

    [JsonPropertyName("tenantId")]
    public string? TenantId { get; init; }

    [JsonPropertyName("userId")]
    public string? UserId { get; init; }

    [JsonPropertyName("conversationCount")]
    public int ConversationCount { get; init; }

    [JsonPropertyName("conversations")]
    public List<ChatConversationResponse> Conversations { get; init; } = [];
}

/// <summary>
/// Error response from chat API.
/// </summary>
internal sealed record ChatErrorResponse
{
    [JsonPropertyName("error")]
    public required string Error { get; init; }

    [JsonPropertyName("code")]
    public string? Code { get; init; }

    [JsonPropertyName("details")]
    public Dictionary<string, object>? Details { get; init; }

    [JsonPropertyName("doctor")]
    public ChatDoctorAction? Doctor { get; init; }
}

internal sealed record ChatDoctorAction
{
    [JsonPropertyName("endpoint")]
    public required string Endpoint { get; init; }

    [JsonPropertyName("suggestedCommand")]
    public required string SuggestedCommand { get; init; }

    [JsonPropertyName("reason")]
    public required string Reason { get; init; }
}