// <copyright file="WorkflowOptions.cs" company="StellaOps">
// Copyright (c) StellaOps. Licensed under the BUSL-1.1.
// </copyright>

namespace StellaOps.Tools.WorkflowGenerator;

/// <summary>
/// Options for workflow generation.
/// Sprint: SPRINT_20260109_010_003 Task: Create models
/// </summary>
public sealed record WorkflowOptions
{
    /// <summary>
    /// Target CI/CD platform.
    /// </summary>
    public required CiPlatform Platform { get; init; }

    /// <summary>
    /// Workflow name.
    /// </summary>
    public string Name { get; init; } = "StellaOps Security Scan";

    /// <summary>
    /// Trigger configuration.
    /// </summary>
    public TriggerConfig Triggers { get; init; } = TriggerConfig.Default;

    /// <summary>
    /// Scan configuration.
    /// </summary>
    public ScanConfig Scan { get; init; } = ScanConfig.DefaultRepository;

    /// <summary>
    /// Upload configuration.
    /// </summary>
    public UploadConfig Upload { get; init; } = UploadConfig.Default;

    /// <summary>
    /// Runner/image to use.
    /// </summary>
    public string? Runner { get; init; }

    /// <summary>
    /// Environment variables.
    /// </summary>
    public IDictionary<string, string> EnvironmentVariables { get; init; } = new Dictionary<string, string>();

    /// <summary>
    /// Include comments in generated YAML.
    /// </summary>
    public bool IncludeComments { get; init; } = true;

    /// <summary>
    /// Creates default options for GitHub Actions.
    /// </summary>
    public static WorkflowOptions GitHubActionsDefault => new()
    {
        Platform = CiPlatform.GitHubActions,
        Runner = "ubuntu-latest"
    };

    /// <summary>
    /// Creates default options for GitLab CI.
    /// </summary>
    public static WorkflowOptions GitLabCiDefault => new()
    {
        Platform = CiPlatform.GitLabCi
    };

    /// <summary>
    /// Creates default options for Azure DevOps.
    /// </summary>
    public static WorkflowOptions AzureDevOpsDefault => new()
    {
        Platform = CiPlatform.AzureDevOps,
        Runner = "ubuntu-latest"
    };

    /// <summary>
    /// Validates the options.
    /// </summary>
    public ValidationResult Validate()
    {
        var errors = new List<string>();

        if (string.IsNullOrWhiteSpace(Name))
            errors.Add("Workflow name is required");

        if (Scan.ImageRef is null && Scan.ScanPath is null)
            errors.Add("Either ImageRef or ScanPath must be specified");

        if (Scan.ImageRef is not null && Scan.ScanPath is not null)
            errors.Add("Only one of ImageRef or ScanPath should be specified");

        return new ValidationResult(errors.Count == 0, errors);
    }
}

/// <summary>
/// Validation result.
/// </summary>
public sealed record ValidationResult(bool IsValid, IReadOnlyList<string> Errors)
{
    public static ValidationResult Success => new(true, []);
    public static ValidationResult Failure(params string[] errors) => new(false, errors);
}