using System.IO;
using System.Text.Json;

namespace AxCopilot.Services.Agent;

public sealed class CronDeleteTool : IAgentTool
{
    public string Name => "cron_delete";
    public string Description => "Delete a local cron-like job descriptor by id or name.";

    public ToolParameterSchema Parameters => new()
    {
        Properties = new()
        {
            ["id"] = new() { Type = "string", Description = "Job id." },
            ["name"] = new() { Type = "string", Description = "Job name (fallback)." }
        },
        Required = []
    };

    public Task<ToolResult> ExecuteAsync(JsonElement args, AgentContext context, CancellationToken ct = default)
    {
        if (string.IsNullOrWhiteSpace(context.WorkFolder) || !Directory.Exists(context.WorkFolder))
            return Task.FromResult(ToolResult.Fail("valid WorkFolder is required."));

        var id = args.TryGetProperty("id", out var idEl) ? (idEl.GetString() ?? "").Trim() : "";
        var name = args.TryGetProperty("name", out var nameEl) ? (nameEl.GetString() ?? "").Trim() : "";
        if (string.IsNullOrWhiteSpace(id) && string.IsNullOrWhiteSpace(name))
            return Task.FromResult(ToolResult.Fail("id or name is required."));

        var jobs = CronStore.Load(context.WorkFolder);
        var removed = jobs.RemoveAll(j =>
            (!string.IsNullOrWhiteSpace(id) && string.Equals(j.Id, id, StringComparison.OrdinalIgnoreCase))
            || (!string.IsNullOrWhiteSpace(name) && string.Equals(j.Name, name, StringComparison.OrdinalIgnoreCase)));
        CronStore.Save(context.WorkFolder, jobs);
        return Task.FromResult(ToolResult.Ok(removed > 0 ? $"Deleted {removed} cron job(s)." : "No matching cron job found."));
    }
}