using NeonSprawl.Server.Game.Contracts;
using NeonSprawl.Server.Game.Encounters;
using NeonSprawl.Server.Game.Factions;
using NeonSprawl.Server.Game.Items;
using NeonSprawl.Server.Game.Quests;
using NeonSprawl.Server.Game.Skills;

namespace NeonSprawl.Server.Tests.Game.Contracts;

public sealed class ContractEconomyValidationTests
{
    private const string TemplateId = "prototype_contract_clear_combat_pocket";
    private const string EncounterId = "prototype_combat_pocket";
    private const string GridOperatorsFactionId = "prototype_faction_grid_operators";

    [Fact]
    public void TryValidateTemplate_ShouldReturnTrue_WhenPrototypeFreezeRowAtCaps()
    {
        // Arrange
        var template = PrototypeE7M4ContractCatalogRules.ExpectedTemplateFreeze[TemplateId];
        var registries = CreatePrototypeRegistries();
        // Act
        var ok = ContractEconomyValidation.TryValidateTemplate(
            template,
            registries.EncounterRegistry,
            registries.ItemRegistry,
            registries.SkillRegistry,
            registries.FactionRegistry,
            out var reasonCode);
        // Assert
        Assert.True(ok);
        Assert.Null(reasonCode);
    }

    [Fact]
    public void TryValidateTemplate_ShouldDenyEconomyCapExceeded_WhenItemQuantityOverBandCap()
    {
        // Arrange
        var prototype = PrototypeE7M4ContractCatalogRules.ExpectedTemplateFreeze[TemplateId];
        var overCapTemplate = prototype with
        {
            CompletionRewardBundle = new QuestRewardBundleRow(
                [new RewardGrantRow("scrap_metal_bulk", 11)],
                prototype.CompletionRewardBundle.SkillXpGrants,
                prototype.CompletionRewardBundle.ReputationGrants),
        };
        var registries = CreatePrototypeRegistries();
        // Act
        var ok = ContractEconomyValidation.TryValidateTemplate(
            overCapTemplate,
            registries.EncounterRegistry,
            registries.ItemRegistry,
            registries.SkillRegistry,
            registries.FactionRegistry,
            out var reasonCode);
        // Assert
        Assert.False(ok);
        Assert.Equal(ContractGeneratorReasonCodes.EconomyCapExceeded, reasonCode);
    }

    [Fact]
    public void TryValidateTemplate_ShouldDenyInvalidRewardBundle_WhenItemIdUnknown()
    {
        // Arrange
        var prototype = PrototypeE7M4ContractCatalogRules.ExpectedTemplateFreeze[TemplateId];
        var unknownItemTemplate = prototype with
        {
            CompletionRewardBundle = new QuestRewardBundleRow(
                [new RewardGrantRow("unknown_item_xyz", 1)],
                prototype.CompletionRewardBundle.SkillXpGrants,
                prototype.CompletionRewardBundle.ReputationGrants),
        };
        var registries = CreatePrototypeRegistries();
        // Act
        var ok = ContractEconomyValidation.TryValidateTemplate(
            unknownItemTemplate,
            registries.EncounterRegistry,
            registries.ItemRegistry,
            registries.SkillRegistry,
            registries.FactionRegistry,
            out var reasonCode);
        // Assert
        Assert.False(ok);
        Assert.Equal(ContractGeneratorReasonCodes.InvalidRewardBundle, reasonCode);
    }

    private static CatalogRegistries CreatePrototypeRegistries()
    {
        var encounterRows = new Dictionary<string, EncounterDefRow>(StringComparer.Ordinal)
        {
            [EncounterId] = new(
                EncounterId,
                "Prototype Combat Pocket",
                "defeat_all_targets",
                ["prototype_npc_melee", "prototype_npc_ranged", "prototype_npc_elite"],
                "prototype_combat_pocket_clear"),
        };
        var encounterRegistry = new EncounterDefinitionRegistry(
            new EncounterDefinitionCatalog("/tmp/encounters", encounterRows, catalogJsonFileCount: 1));

        var itemRows = new Dictionary<string, ItemDefRow>(StringComparer.Ordinal)
        {
            ["scrap_metal_bulk"] = new(
                "scrap_metal_bulk",
                "Scrap Metal (Bulk)",
                "material",
                StackMax: 999,
                InventorySlotKind: "bag",
                Rarity: null,
                BindPolicy: null,
                DurabilityMax: null),
        };
        var itemRegistry = new ItemDefinitionRegistry(
            new ItemDefinitionCatalog("/tmp/items", itemRows, catalogJsonFileCount: 1));

        var skillRows = new Dictionary<string, SkillDefRow>(StringComparer.Ordinal)
        {
            ["salvage"] = new("salvage", "gather", "Salvage", ["activity", "mission_reward"]),
            ["refine"] = new("refine", "process", "Refine", ["activity", "mission_reward", "trainer"]),
            ["intrusion"] = new("intrusion", "tech", "Intrusion", ["activity", "mission_reward", "book_or_item"]),
        };
        var skillRegistry = new SkillDefinitionRegistry(
            new SkillDefinitionCatalog("/tmp/skills", skillRows, catalogJsonFileCount: 1));

        var factionRows = new Dictionary<string, FactionDefRow>(StringComparer.Ordinal)
        {
            [GridOperatorsFactionId] = PrototypeE7M3FactionCatalogRules.ExpectedFactionFreeze[GridOperatorsFactionId],
        };
        var factionRegistry = new FactionDefinitionRegistry(
            new FactionDefinitionCatalog("/tmp/factions", factionRows, catalogJsonFileCount: 1));

        return new CatalogRegistries(encounterRegistry, itemRegistry, skillRegistry, factionRegistry);
    }

    private sealed record CatalogRegistries(
        IEncounterDefinitionRegistry EncounterRegistry,
        IItemDefinitionRegistry ItemRegistry,
        ISkillDefinitionRegistry SkillRegistry,
        IFactionDefinitionRegistry FactionRegistry);
}