{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/TeamLapen/Vampirism/refs/heads/dev/schemas/skill_tree.schema.json",
  "title": "Faction API Skill Tree",
  "description": "A skill tree shown as a tab in the faction skill screen. Loaded by the dynamic registry `factionapi:skill_tree` from `data/<namespace>/factionapi/skill_tree/<path>.json` (de.teamlapen.faction.common.factions.skills.SkillTree#CODEC).",
  "type": "object",
  "required": ["faction", "unlock_predicate", "display", "name"],
  "additionalProperties": false,
  "properties": {
    "faction": {
      "$ref": "#/$defs/resourceLocation",
      "description": "Id of the playable faction this tree belongs to, e.g. `vampirism:vampire`."
    },
    "unlock_predicate": {
      "type": "object",
      "description": "Vanilla entity predicate checked against the player to decide whether the tree is unlocked. Re-evaluated when the faction / lord level changes. An empty object always matches. Faction API registers the `type_specific` sub-predicates `factionapi:player_faction` and `factionapi:faction` (fields: optional `faction` id, optional int `level`, optional int `lord_level`)."
    },
    "display": {
      "$ref": "#/$defs/itemStack",
      "description": "Icon shown for the tree tab (vanilla item-stack-template format; a bare item id string is also accepted)."
    },
    "name": {
      "$ref": "#/$defs/component",
      "description": "Title of the tree."
    },
    "background": {
      "$ref": "#/$defs/resourceLocation",
      "description": "Background sprite id, resolved to `<namespace>:textures/<path>.png`. Defaults to the built-in level background."
    },
    "skill_point_tag": {
      "$ref": "#/$defs/resourceLocation",
      "description": "Skill tree tag id (without the leading `#`) identifying the skill-point pool the tree spends from (ISkillTree#skillPointTag). Defaults to `factionapi:default`."
    },
    "order_after": {
      "type": "array",
      "description": "Skill tree ids after which this tree is displayed in the skill screen. Defaults to an empty list.",
      "items": { "$ref": "#/$defs/resourceLocation" }
    }
  },
  "$defs": {
    "resourceLocation": {
      "type": "string",
      "description": "A namespaced id, e.g. `minecraft:stone` or `mymod:thing`.",
      "pattern": "^([a-z0-9_.-]+:)?[a-z0-9_./-]+$"
    },
    "component": {
      "description": "A Minecraft raw JSON text component (string, object or array form).",
      "oneOf": [
        { "type": "string" },
        { "type": "boolean" },
        { "type": "number" },
        { "type": "object" },
        { "type": "array" }
      ]
    },
    "itemStack": {
      "description": "Vanilla item-stack-template format (net.minecraft.world.item.ItemStackTemplate). A bare item id string is also accepted.",
      "oneOf": [
        { "$ref": "#/$defs/resourceLocation" },
        {
          "type": "object",
          "required": ["id"],
          "additionalProperties": false,
          "properties": {
            "id": { "$ref": "#/$defs/resourceLocation", "description": "Item id." },
            "count": { "type": "integer", "minimum": 1, "maximum": 99, "default": 1, "description": "Stack size." },
            "components": { "type": "object", "description": "Data component patch applied to the stack." }
          }
        }
      ]
    }
  }
}