using System.Text.Json.Serialization;

namespace NeonSprawl.Server.Game.Quests;

/// <summary>JSON body for <c>GET /game/world/quest-definitions</c> (NEO-115).</summary>
public sealed class QuestDefinitionsListResponse
{
    public const int CurrentSchemaVersion = 1;

    [JsonPropertyName("schemaVersion")]
    public int SchemaVersion { get; init; } = CurrentSchemaVersion;

    /// <summary>Loaded quests ordered by stable <c>id</c> (ordinal), matching <see cref="IQuestDefinitionRegistry.GetDefinitionsInIdOrder"/>.</summary>
    [JsonPropertyName("quests")]
    public required IReadOnlyList<QuestDefinitionJson> Quests { get; init; }
}

/// <summary>One row in the read-only quest definition projection.</summary>
public sealed class QuestDefinitionJson
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("displayName")]
    public required string DisplayName { get; init; }

    [JsonPropertyName("prerequisiteQuestIds")]
    public required IReadOnlyList<string> PrerequisiteQuestIds { get; init; }

    [JsonPropertyName("steps")]
    public required IReadOnlyList<QuestStepDefinitionJson> Steps { get; init; }

    /// <summary>Minimum-standing gates for quest accept; omitted when the quest has no rules (NEO-140).</summary>
    [JsonPropertyName("factionGateRules")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public IReadOnlyList<QuestFactionGateRuleJson>? FactionGateRules { get; init; }
}

/// <summary>One faction gate rule in the read-only quest definition projection (NEO-140).</summary>
public sealed class QuestFactionGateRuleJson
{
    [JsonPropertyName("factionId")]
    public required string FactionId { get; init; }

    [JsonPropertyName("minStanding")]
    public int MinStanding { get; init; }
}

/// <summary>One step in the read-only quest definition projection.</summary>
public sealed class QuestStepDefinitionJson
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("displayName")]
    public required string DisplayName { get; init; }

    [JsonPropertyName("objectives")]
    public required IReadOnlyList<QuestObjectiveDefinitionJson> Objectives { get; init; }
}

/// <summary>One objective in the read-only quest definition projection (flat mirror of content).</summary>
public sealed class QuestObjectiveDefinitionJson
{
    [JsonPropertyName("id")]
    public required string Id { get; init; }

    [JsonPropertyName("kind")]
    public required string Kind { get; init; }

    [JsonPropertyName("itemId")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public string? ItemId { get; init; }

    [JsonPropertyName("quantity")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public int? Quantity { get; init; }

    [JsonPropertyName("recipeId")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public string? RecipeId { get; init; }

    [JsonPropertyName("encounterId")]
    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
    public string? EncounterId { get; init; }
}