{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:akari-video:schema:playbook:v0",
  "title": "AKARI Video playbook v0",
  "type": "object",
  "additionalProperties": false,
  "required": ["version", "kind", "id", "name", "playbookVersion", "depth", "category", "steps", "settings", "license", "provenance"],
  "properties": {
    "version": { "const": 0 },
    "kind": { "const": "akari-playbook" },
    "id": { "type": "string", "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$" },
    "name": { "$ref": "#/$defs/text" },
    "playbookVersion": { "type": "integer", "minimum": 1 },
    "depth": { "enum": [1, 2, 3] },
    "template": {
      "type": "object", "additionalProperties": false,
      "required": ["item", "fps", "width", "height", "durationSec", "slots", "media"],
      "properties": {
        "item": { "const": "template/item.json" },
        "fps": { "type": "number", "exclusiveMinimum": 0 },
        "width": { "type": "integer", "minimum": 1 },
        "height": { "type": "integer", "minimum": 1 },
        "durationSec": { "type": "number", "exclusiveMinimum": 0 },
        "slots": { "type": "array", "items": { "type": "object", "additionalProperties": false,
          "required": ["placeholder", "item"], "properties": {
            "placeholder": { "$ref": "#/$defs/id" }, "item": { "type": "string", "minLength": 1 }
          } } },
        "media": { "type": "array", "items": { "type": "object", "additionalProperties": false,
          "required": ["path", "sha256", "license", "source"], "properties": {
            "path": { "type": "string", "pattern": "^template/media/[^./][^/]*$" },
            "sha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" },
            "license": { "$ref": "#/$defs/text" },
            "source": { "enum": ["builtin", "lab", "ai", "own"] }
          } } }
      }
    },
    "category": { "enum": ["film", "short-drama", "mv", "explainer", "product", "vlog", "cm", "education", "clip", "logo"] },
    "preview": {
      "type": "object", "additionalProperties": false,
      "properties": {
        "cover": { "type": "string" },
        "frames": { "type": "array", "maxItems": 5, "items": { "type": "string" } }
      }
    },
    "example": { "type": "boolean" },
    "tags": {
      "type": "object", "additionalProperties": false,
      "properties": {
        "form": { "$ref": "#/$defs/tags" }, "length": { "$ref": "#/$defs/tags" },
        "technique": { "$ref": "#/$defs/tags" }, "tools": { "$ref": "#/$defs/tags" },
        "style": { "$ref": "#/$defs/tags" }, "industry": { "$ref": "#/$defs/tags" },
        "materials": { "$ref": "#/$defs/tags" }, "scale": { "$ref": "#/$defs/tags" }
      }
    },
    "requires": {
      "type": "object", "additionalProperties": false,
      "properties": {
        "cli": { "$ref": "#/$defs/text" },
        "tools": { "$ref": "#/$defs/tags" },
        "skills": { "$ref": "#/$defs/tags" }
      }
    },
    "steps": { "type": "array", "minItems": 1, "items": {
      "type": "object", "additionalProperties": false,
      "required": ["id", "title", "what"],
      "properties": {
        "id": { "$ref": "#/$defs/id" }, "title": { "$ref": "#/$defs/text" },
        "what": { "$ref": "#/$defs/text" }, "skill": { "$ref": "#/$defs/id" },
        "checkpoint": { "type": "boolean" }
      }
    } },
    "settings": { "type": "object" },
    "placeholders": { "type": "array", "items": {
      "type": "object", "additionalProperties": false,
      "required": ["id", "role", "kind"],
      "properties": {
        "id": { "$ref": "#/$defs/id" }, "role": { "$ref": "#/$defs/text" },
        "kind": { "enum": ["video", "image", "audio"] },
        "durationHintSec": { "type": "number", "minimum": 0 },
        "sample": { "$ref": "#/$defs/sample" }
      }
    } },
    "beats": { "type": "array", "items": {
      "type": "object", "additionalProperties": false,
      "required": ["id", "at", "duration", "title"],
      "properties": {
        "id": { "$ref": "#/$defs/id" },
        "at": { "type": "number", "minimum": 0 },
        "duration": { "type": "number", "exclusiveMinimum": 0 },
        "title": { "$ref": "#/$defs/text" },
        "note": { "$ref": "#/$defs/text" },
        "placeholder": { "$ref": "#/$defs/id" }
      }
    } },
    "parts": { "type": "array", "items": {
      "type": "object", "additionalProperties": false,
      "required": ["kind", "id", "source", "license"],
      "properties": {
        "kind": { "enum": ["asset", "style", "kit"] },
        "category": { "$ref": "#/$defs/id" }, "id": { "$ref": "#/$defs/id" },
        "uid": { "$ref": "#/$defs/text" }, "revision": { "type": "integer", "minimum": 0 },
        "source": { "enum": ["builtin", "lab", "own", "site", "ai"] },
        "license": { "$ref": "#/$defs/text" }, "tier": { "enum": ["free", "pro"] }
      }
    } },
    "license": { "$ref": "#/$defs/text" },
    "provenance": {
      "type": "object", "additionalProperties": false,
      "required": ["fromProject", "recordedAt", "akariVersion", "recordedBy"],
      "properties": {
        "fromProject": { "$ref": "#/$defs/text" },
        "recordedAt": { "$ref": "#/$defs/text" },
        "akariVersion": { "$ref": "#/$defs/text" },
        "recordedBy": { "$ref": "#/$defs/text" },
        "appliedFrom": { "type": "object", "additionalProperties": false,
          "required": ["path", "playbookVersion", "appliedAt"],
          "properties": {
            "path": { "$ref": "#/$defs/text" },
            "playbookVersion": { "type": "integer", "minimum": 1 },
            "appliedAt": { "$ref": "#/$defs/text" }
          }
        }
      }
    }
  },
  "allOf": [
    { "if": { "properties": { "depth": { "const": 1 } } }, "then": { "not": { "anyOf": [{ "required": ["placeholders"] }, { "required": ["parts"] }] } } },
    { "if": { "properties": { "depth": { "const": 3 } }, "required": ["depth"] }, "then": { "required": ["template"] }, "else": { "not": { "required": ["template"] } } }
  ],
  "$defs": {
    "text": { "type": "string", "minLength": 1, "pattern": "\\S" },
    "id": { "type": "string", "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$" },
    "tags": { "type": "array", "items": { "$ref": "#/$defs/text" }, "uniqueItems": true },
    "sample": { "type": "object", "additionalProperties": false,
      "required": ["category", "id"],
      "properties": {
        "category": { "$ref": "#/$defs/id" }, "id": { "$ref": "#/$defs/id" },
        "source": { "enum": ["builtin", "lab", "own", "site", "ai"] }
      }
    }
  }
}