{
  "$schema": "https://etalii.net/adp/desl/schema/0.1/desl.schema.json#/$defs/Specification",
  "desl": "0.2",
  "doc": "DESL's smallest hierarchy (DESL 0.2, section 7.7): an outline of sections that hold tasks and further sections, with counted ids, tags whose colours the registration keeps, mentions in a description, notes about an entry, and a move to another section.",
  "language": { "id": "net.etalii.adp.example.outline", "version": "0.1.0", "origin": "example/outline", "label": "Outline" },
  "metamodel": {
    "document": {
      "attributes": {
        "lastSection": { "type": "string", "doc": "The last section id the counter gave (DESL section 5.3.5)." },
        "lastTask": { "type": "string", "doc": "The last task id the counter gave." }
      }
    },
    "types": {
      "Section": {
        "attributes": {
          "title": { "type": "string", "required": true },
          "description": { "type": "text", "mentions": { "pattern": "\\[(?:S|T)-\\d+\\]\\([^)]*\\)|\\[(?<id>(?:S|T)-\\d+)\\]", "types": ["Section", "Task"] } },
          "tags": { "type": "string", "many": true }
        },
        "children": { "allowed": ["Section", "Task"], "ordered": true },
        "labelAttribute": "title"
      },
      "Task": {
        "attributes": {
          "title": { "type": "string", "required": true },
          "description": { "type": "text", "mentions": { "pattern": "\\[(?:S|T)-\\d+\\]\\([^)]*\\)|\\[(?<id>(?:S|T)-\\d+)\\]", "types": ["Section", "Task"] } },
          "tags": { "type": "string", "many": true }
        },
        "labelAttribute": "title"
      },
      "Note": {
        "attributes": {
          "about": { "type": "string", "required": true, "mentions": { "pattern": "^(?<id>(?:S|T)-\\d+)$", "types": ["Section", "Task"] } },
          "kind": { "type": "NoteKind", "required": true },
          "text": { "type": "string" },
          "detail": { "type": "text" },
          "resolved": { "type": "bool", "default": false }
        },
        "labelAttribute": "text"
      },
      "Tag": {
        "attributes": {
          "name": { "type": "string", "required": true, "pattern": "^[^\\s:]+$" },
          "colour": { "type": "Colour", "default": "default" }
        },
        "labelAttribute": "name"
      }
    },
    "enums": {
      "NoteKind": { "values": { "question": { "value": "Question", "icon": "help-circle" }, "remark": { "value": "Remark", "icon": "comment" } } },
      "Colour": { "values": { "default": {}, "gray": {}, "red": {}, "green": {}, "blue": {} } }
    }
  },
  "persistence": {
    "format": "fbl",
    "bindings": ["minimal-hierarchy.fbl#markdown"],
    "typeMap": {
      "Marks": { "as": "document", "doc": "Line 2 of the file holds the last ids the counters gave." }
    },
    "ids": {
      "missing": "assign",
      "types": {
        "Section": { "strategy": "counter", "prefix": "S-", "digits": 4, "mark": "lastSection", "placeholder": "NEW" },
        "Task": { "strategy": "counter", "prefix": "T-", "digits": 4, "mark": "lastTask", "placeholder": "NEW" },
        "Note": { "strategy": "derived", "expression": "'note/' + string(self.positionIn(document.elementsOfType('Note')))", "ephemeral": true },
        "Tag": { "strategy": "derived", "expression": "'tag/' + self.name.lowerAscii()" }
      }
    },
    "settings": {
      "tags": { "type": "Tag", "key": "name", "value": "colour", "initial": [] }
    }
  },
  "surface": {
    "kind": "hierarchy",
    "levels": { "type": "Section", "title": "title", "description": "description" },
    "entries": { "type": "Task", "title": "title", "description": "description" },
    "labels": { "tags": { "on": ["Section", "Task"], "options": { "type": "Tag", "name": "name", "colour": "colour" }, "prefix": "#" } },
    "notes": { "type": "Note", "about": "about", "kind": "kind", "text": "text", "detail": "detail", "resolved": "resolved" },
    "ids": "shown"
  },
  "operations": {
    "addTask": {
      "label": "New task",
      "for": ["Section"],
      "actions": [{ "create": { "type": "'Task'", "parent": "self", "attributes": { "title": "'New task'" } } }]
    },
    "moveTask": {
      "label": "Move to section",
      "for": ["Task"],
      "params": { "section": { "type": "Section", "required": true } },
      "unavailable": [{ "when": "document.elementsOfType('Section').size() < 2", "message": "There is no other section to move it to." }],
      "actions": [{ "move": { "parent": "p.section" } }]
    },
    "resolveNote": {
      "label": { "cel": "self.resolved ? 'Reopen' : 'Resolve'" },
      "for": ["Note"],
      "actions": [{ "set": { "resolved": "!self.resolved" } }]
    }
  }
}