namespace HSchool.Content.Tests;

public class PatchTests
{
    private readonly CatalogLoader _loader = new();

    [Fact]
    public void Add_AppendsToActions()
    {
        var catalog = _loader.Load(
            [CatalogLoader.CorePackId, "addon"],
            [
                PackDocuments.Def(CatalogLoader.CorePackId, "actions", "sit", """{ "defName": "Sit", "abstract": true }"""),
                PackDocuments.Def(CatalogLoader.CorePackId, "actions", "inspect", """{ "defName": "Inspect", "abstract": true }"""),
                PackDocuments.Def(CatalogLoader.CorePackId, "things", "chair", """{ "defName": "Chair", "actions": ["Sit"] }"""),
                PackDocuments.Patch(
                    "addon",
                    "chair-inspect",
                    """
                    { "target": "Chair", "ops": [ { "op": "add", "path": "/actions/-", "value": "Inspect" } ] }
                    """),
            ]);

        Assert.Equal(["Sit", "Inspect"], catalog.Things["Chair"].Actions);
    }

    [Fact]
    public void UnknownOp_FailsTheCatalog()
    {
        var ex = Assert.Throws<ContentLoadException>(() => _loader.Load(
            [CatalogLoader.CorePackId],
            [
                PackDocuments.Def(CatalogLoader.CorePackId, "things", "chair", """{ "defName": "Chair" }"""),
                PackDocuments.Patch(
                    CatalogLoader.CorePackId,
                    "bad",
                    """{ "target": "Chair", "ops": [ { "op": "move", "path": "/actions" } ] }"""),
            ]));

        Assert.Contains("Unknown patch op", ex.Message);
    }

    [Fact]
    public void MissingTarget_FailsTheCatalog()
    {
        var ex = Assert.Throws<ContentLoadException>(() => _loader.Load(
            [CatalogLoader.CorePackId],
            [
                PackDocuments.Def(CatalogLoader.CorePackId, "things", "chair", """{ "defName": "Chair" }"""),
                PackDocuments.Patch(
                    CatalogLoader.CorePackId,
                    "ghost",
                    """{ "target": "Missing", "ops": [ { "op": "remove", "path": "/actions" } ] }"""),
            ]));

        Assert.Contains("was not found", ex.Message);
    }

    [Fact]
    public void ReplaceAndRemove_EditRoomDef()
    {
        var catalog = _loader.Load(
            [CatalogLoader.CorePackId, "addon"],
            [
                PackDocuments.Def(CatalogLoader.CorePackId, "things", "chair", """{ "defName": "Chair" }"""),
                PackDocuments.Def(CatalogLoader.CorePackId, "things", "desk", """{ "defName": "Desk" }"""),
                PackDocuments.Def(CatalogLoader.CorePackId, "works", "teach", """{ "defName": "TeachLesson" }"""),
                PackDocuments.Def(CatalogLoader.CorePackId, "works", "walk", """{ "defName": "WalkSchool" }"""),
                PackDocuments.Def(
                    CatalogLoader.CorePackId,
                    "rooms",
                    "office",
                    """
                    {
                      "defName": "Office",
                      "slots": [ { "key": "seat", "thing": "Chair" } ],
                      "works": ["TeachLesson", "WalkSchool"],
                      "travelMinutes": 1
                    }
                    """),
                PackDocuments.Patch(
                    "addon",
                    "office",
                    """
                    {
                      "target": "Office",
                      "ops": [
                        { "op": "replace", "path": "/slots/0/thing", "value": "Desk" },
                        { "op": "remove", "path": "/works/1" }
                      ]
                    }
                    """),
            ]);

        Assert.Equal("Desk", catalog.Rooms["Office"].Slots[0].Thing);
        Assert.Equal(["TeachLesson"], catalog.Rooms["Office"].Works);
    }
}