using System.Text.Json;
using System.Text.Json.Nodes;
using ClawdDotNet.Core.Config;
using ClawdDotNet.Core.Organisation;
using Shouldly;

namespace ClawdDotNet.Core.Tests.Organisation;

/// <summary>
/// #691: A whole house as a file — never with credentials, and a broken file is refused before
/// it touches an instance.
/// </summary>
public sealed class OrgTemplateTests
{
    private static InstanceConfig House()
    {
        var instance = new InstanceConfig();
        instance.Units.Add(new UnitConfig { Id = "newsroom", Name = "Newsroom", LeaderAgentId = "editor", Goal = "Publish daily." });
        instance.Units.Add(new UnitConfig { Id = "desk", Name = "Desk", ParentId = "newsroom" });
        instance.Agents.Add(new AgentConfig
        {
            AgentId = "editor", DisplayName = "Editor", UnitId = "newsroom", Model = "m/large",
            Identity = "You lead the newsroom.", Soul = "Careful.",
            Budget = new AgentBudget { DailyCostUsd = 2 },
            Tools = new()
            {
                ["Mail"] = new() { ["host"] = "mail.example.org", ["password"] = "hunter2", ["smtpPassword"] = "x" },
                ["DirectAPI"] = new()
                {
                    ["providers"] = JsonSerializer.Deserialize<JsonElement>("""{"weather":{"url":"https://w.example","apiKey":"k-123"}}""")
                }
            }
        });
        instance.Agents.Add(new AgentConfig { AgentId = "writer", DisplayName = "Writer", UnitId = "desk", Model = "m/small" });
        return instance;
    }

    private static OrgTemplate Export() => OrgTemplates.Export(House(), "Newsroom", "A small newsroom.",
        unit => unit == "newsroom" ? "Every claim has a source." : null, DateTime.UtcNow);

    [Fact]
    public void Export_empties_every_credential_and_names_it_instead()
    {
        var template = Export();
        var json = JsonSerializer.Serialize(template, OrgTemplates.Json);

        json.ShouldNotContain("hunter2");
        json.ShouldNotContain("k-123");
        json.ShouldContain("mail.example.org", customMessage: "what is not secret stays");
        template.Credentials.Select(c => $"{c.AgentId}:{c.Tool}:{c.Field}").ShouldBe(
            ["editor:Mail:password", "editor:Mail:smtpPassword", "editor:DirectAPI:providers.weather.apiKey"], ignoreOrder: true);
    }

    [Fact]
    public void Export_carries_the_structure_texts_and_doctrines()
    {
        var template = OrgTemplates.Parse(JsonSerializer.Serialize(Export(), OrgTemplates.Json));

        template.Units.Select(u => u.Id).ShouldBe(["newsroom", "desk"]);
        template.Agents.Single(a => a.AgentId == "editor").Identity.ShouldBe("You lead the newsroom.");
        template.Doctrines["newsroom"].ShouldBe("Every claim has a source.");
        OrgTemplates.Problems(template).ShouldBeEmpty();
    }

    [Fact]
    public void A_file_that_is_no_template_is_refused()
    {
        Should.Throw<FormatException>(() => OrgTemplates.Parse("""{"units":[]}"""));
        Should.Throw<FormatException>(() => OrgTemplates.Parse("""{"format":"clawddotnet-org-template","formatVersion":99}"""));
        Should.Throw<FormatException>(() => OrgTemplates.Parse("not json"));
    }

    [Fact]
    public void A_broken_structure_is_named_before_anything_is_written()
    {
        var template = Export();
        template.Units.Add(new UnitConfig { Id = "a", Name = "A", ParentId = "b" });
        template.Units.Add(new UnitConfig { Id = "b", Name = "B", ParentId = "a" });
        template.Units.Add(new UnitConfig { Id = "orphan", Name = "Orphan", ParentId = "nowhere" });
        template.Units[1].LeaderAgentId = "editor";
        template.Agents.Add(new TemplateAgent { AgentId = "writer", DisplayName = "Writer 2" });
        template.Agents[0].Tools["Mail"]["password"] = "smuggled";

        var problems = OrgTemplates.Problems(template);

        problems.ShouldContain(p => p.Contains("circle"));
        problems.ShouldContain(p => p.Contains("'nowhere'"));
        problems.ShouldContain(p => p.Contains("led by 'editor'"));
        problems.ShouldContain(p => p.Contains("'writer' appears twice"));
        problems.ShouldContain(p => p.Contains("never carries one"));
    }

    [Fact]
    public void A_nested_secret_is_found_under_any_variant_of_its_name()
    {
        var node = JsonNode.Parse("""{"a":{"clientSecret":"s","list":[{"accessToken":"t"}],"name":"keep"}}""")!;

        OrgTemplates.StripSecrets(node, "").ShouldBe(["a.clientSecret", "a.list[0].accessToken"]);
        node.ToJsonString().ShouldContain("keep");
        node.ToJsonString().ShouldNotContain("\"s\"");
    }
}