{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "https://fut.sh/schemas/project.json",
  "title": "Fut project recipe",
  "description": "Trusted repository configuration for bootstrapping a Fut project session.",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "focus": {
      "type": "string",
      "pattern": "^[A-Za-z0-9_-]{1,64}\\.[A-Za-z0-9_-]{1,64}\\.[A-Za-z0-9_-]{1,64}$",
      "description": "Initially focused pane as WORKSPACE.TAB.PANE. All three IDs must exist in this recipe."
    },
    "environment": {
      "$ref": "#/definitions/environment"
    },
    "extension": {
      "type": "object",
      "description": "Project-scoped configuration keyed by installed extension ID.",
      "additionalProperties": {
        "type": "object",
        "additionalProperties": {
          "$ref": "#/definitions/tomlValue"
        }
      }
    },
    "workspaces": {
      "type": "array",
      "minItems": 1,
      "maxItems": 32,
      "items": {
        "$ref": "#/definitions/workspace"
      }
    }
  },
  "required": ["workspaces"],
  "definitions": {
    "id": {
      "type": "string",
      "pattern": "^[A-Za-z0-9_-]{1,64}$"
    },
    "cwd": {
      "type": "string",
      "minLength": 1,
      "description": "Working directory relative to the workspace root, or an absolute path."
    },
    "environment": {
      "type": "object",
      "maxProperties": 128,
      "description": "Environment variables. Names must be shell identifiers and cannot start with FUT_.",
      "additionalProperties": {
        "type": "string"
      }
    },
    "command": {
      "type": "array",
      "minItems": 1,
      "maxItems": 64,
      "items": {
        "type": "string",
        "minLength": 1
      },
      "description": "Program followed by its arguments, executed directly without a shell."
    },
    "split": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "target": {
          "$ref": "#/definitions/id",
          "description": "ID of an earlier pane in this tab."
        },
        "direction": {
          "enum": ["right", "down"]
        }
      },
      "required": ["target", "direction"]
    },
    "firstPane": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "id": {
          "$ref": "#/definitions/id"
        },
        "command": {
          "$ref": "#/definitions/command"
        },
        "exec": {
          "type": "boolean",
          "default": false
        },
        "cwd": {
          "$ref": "#/definitions/cwd"
        },
        "environment": {
          "$ref": "#/definitions/environment"
        }
      }
    },
    "splitPane": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "id": {
          "$ref": "#/definitions/id"
        },
        "command": {
          "$ref": "#/definitions/command"
        },
        "exec": {
          "type": "boolean",
          "default": false
        },
        "cwd": {
          "$ref": "#/definitions/cwd"
        },
        "environment": {
          "$ref": "#/definitions/environment"
        },
        "split": {
          "$ref": "#/definitions/split"
        }
      },
      "required": ["split"]
    },
    "tab": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "id": {
          "$ref": "#/definitions/id"
        },
        "title": {
          "type": "string",
          "pattern": "\\S"
        },
        "cwd": {
          "$ref": "#/definitions/cwd"
        },
        "environment": {
          "$ref": "#/definitions/environment"
        },
        "panes": {
          "type": "array",
          "minItems": 1,
          "maxItems": 32,
          "items": [
            {
              "$ref": "#/definitions/firstPane"
            }
          ],
          "additionalItems": {
            "$ref": "#/definitions/splitPane"
          }
        }
      },
      "required": ["panes"]
    },
    "workspace": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "id": {
          "$ref": "#/definitions/id"
        },
        "title": {
          "type": "string",
          "pattern": "\\S"
        },
        "tabs": {
          "type": "array",
          "minItems": 1,
          "maxItems": 32,
          "items": {
            "$ref": "#/definitions/tab"
          }
        }
      },
      "required": ["tabs"]
    },
    "tomlValue": {
      "oneOf": [
        {
          "type": ["string", "number", "integer", "boolean"]
        },
        {
          "type": "array",
          "items": {
            "$ref": "#/definitions/tomlValue"
          }
        },
        {
          "type": "object",
          "additionalProperties": {
            "$ref": "#/definitions/tomlValue"
          }
        }
      ]
    }
  }
}