{
    "$schema": "http://json-schema.org/draft-07/schema#",
    "$id": "troika-skill",
    "title": "Troika! Skill",
    "description": "A skill definition in the Troika! RPG system",
    "type": "object",
    "properties": {
        "name": {
            "type": "string",
            "description": "Skill name"
        },
        "description": {
            "type": "string",
            "description": "What this skill represents and how it's used"
        },
        "type": {
            "type": "string",
            "enum": [
                "general",
                "advanced",
                "weapon",
                "spell",
                "language",
                "secret"
            ],
            "description": "Skill category"
        },
        "baseAttribute": {
            "type": "string",
            "enum": [
                "skill",
                "luck",
                "stamina",
                "special"
            ],
            "default": "skill",
            "description": "Which attribute this skill is tested against"
        },
        "specializations": {
            "type": "array",
            "items": {
                "type": "string"
            },
            "description": "Possible specializations for this skill"
        },
        "examples": {
            "type": "array",
            "items": {
                "type": "string"
            },
            "description": "Example uses of this skill"
        },
        "testDifficulty": {
            "type": "object",
            "properties": {
                "trivial": {
                    "type": "string",
                    "description": "Examples of trivial tests"
                },
                "moderate": {
                    "type": "string",
                    "description": "Examples of moderate tests"
                },
                "hard": {
                    "type": "string",
                    "description": "Examples of hard tests"
                },
                "extreme": {
                    "type": "string",
                    "description": "Examples of extreme tests"
                }
            },
            "description": "Difficulty guidelines for this skill"
        },
        "opposedTests": {
            "type": "array",
            "items": {
                "type": "string"
            },
            "description": "Common opposed test scenarios"
        },
        "weaponProperties": {
            "type": "object",
            "properties": {
                "damageTable": {
                    "type": "string",
                    "description": "Which damage table to use"
                },
                "range": {
                    "type": "string",
                    "enum": [
                        "melee",
                        "close",
                        "medium",
                        "long",
                        "extreme"
                    ],
                    "description": "Weapon range category"
                },
                "twoHanded": {
                    "type": "boolean",
                    "default": false,
                    "description": "Whether weapon requires two hands"
                },
                "properties": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "reload",
                            "slow",
                            "defensive",
                            "reach",
                            "thrown",
                            "precise",
                            "blast"
                        ]
                    },
                    "description": "Special weapon properties"
                }
            },
            "description": "Properties for weapon skills"
        },
        "spellProperties": {
            "type": "object",
            "properties": {
                "school": {
                    "type": "string",
                    "description": "School of magic"
                },
                "complexity": {
                    "type": "string",
                    "enum": [
                        "cantrip",
                        "basic",
                        "intermediate",
                        "advanced",
                        "master"
                    ],
                    "description": "Spell complexity level"
                },
                "components": {
                    "type": "array",
                    "items": {
                        "type": "string",
                        "enum": [
                            "verbal",
                            "somatic",
                            "material",
                            "focus"
                        ]
                    },
                    "description": "Required spell components"
                }
            },
            "description": "Properties for spell skills"
        },
        "languageProperties": {
            "type": "object",
            "properties": {
                "family": {
                    "type": "string",
                    "description": "Language family or group"
                },
                "script": {
                    "type": "string",
                    "description": "Writing system used"
                },
                "commonality": {
                    "type": "string",
                    "enum": [
                        "common",
                        "uncommon",
                        "rare",
                        "ancient",
                        "secret"
                    ],
                    "description": "How widespread this language is"
                },
                "relatedLanguages": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    },
                    "description": "Languages that provide bonuses to learning this one"
                }
            },
            "description": "Properties for language skills"
        },
        "secretProperties": {
            "type": "object",
            "properties": {
                "organization": {
                    "type": "string",
                    "description": "Which group uses this secret sign"
                },
                "complexity": {
                    "type": "string",
                    "enum": [
                        "simple",
                        "moderate",
                        "complex"
                    ],
                    "description": "How complex the sign system is"
                },
                "detection": {
                    "type": "string",
                    "description": "How to detect or recognize these signs"
                }
            },
            "description": "Properties for secret sign skills"
        },
        "advancementRules": {
            "type": "object",
            "properties": {
                "canImprove": {
                    "type": "boolean",
                    "default": true,
                    "description": "Whether this skill can be improved"
                },
                "maxRank": {
                    "type": "integer",
                    "description": "Maximum rank (null for unlimited)"
                },
                "specialRestrictions": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    },
                    "description": "Special advancement restrictions"
                },
                "prerequisites": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    },
                    "description": "Required skills or conditions"
                }
            },
            "description": "Rules governing skill advancement"
        },
        "tags": {
            "type": "array",
            "items": {
                "type": "string"
            },
            "description": "Organizational tags"
        },
        "source": {
            "type": "string",
            "description": "Which book or supplement this skill comes from"
        },
        "alternatives": {
            "type": "array",
            "items": {
                "type": "string"
            },
            "description": "Alternative names or similar skills"
        },
        "synergies": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "skill": {
                        "type": "string",
                        "description": "Related skill name"
                    },
                    "bonus": {
                        "type": "string",
                        "description": "Bonus provided by having both skills"
                    }
                },
                "required": [
                    "skill",
                    "bonus"
                ]
            },
            "description": "Bonuses for having related skills"
        },
        "@context": {
            "type": [
                "string",
                "object",
                "array"
            ],
            "description": "JSON-LD context reference or inline context object"
        },
        "@id": {
            "type": "string",
            "description": "JSON-LD unique resource identifier URI"
        },
        "@type": {
            "type": [
                "string",
                "array"
            ],
            "description": "JSON-LD semantic resource type"
        }
    },
    "required": [
        "name",
        "description",
        "type"
    ],
    "oneOf": [
        {
            "properties": {
                "type": {
                    "const": "weapon"
                }
            },
            "required": [
                "weaponProperties"
            ]
        },
        {
            "properties": {
                "type": {
                    "const": "spell"
                }
            },
            "required": [
                "spellProperties"
            ]
        },
        {
            "properties": {
                "type": {
                    "const": "language"
                }
            },
            "required": [
                "languageProperties"
            ]
        },
        {
            "properties": {
                "type": {
                    "const": "secret"
                }
            },
            "required": [
                "secretProperties"
            ]
        },
        {
            "properties": {
                "type": {
                    "not": {
                        "enum": [
                            "weapon",
                            "spell",
                            "language",
                            "secret"
                        ]
                    }
                }
            }
        }
    ]
}