{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/mirivlad/verstak-sdk/main/schemas/sync.json",
  "title": "Verstak core sync operation log",
  "description": "Wire contracts for the core-owned operation log. Plugins may configure and display sync, but do not create operations.",
  "type": "object",
  "properties": {
    "Operation": { "$ref": "#/$defs/Operation" },
    "PushRequest": { "$ref": "#/$defs/PushRequest" },
    "PullResponse": { "$ref": "#/$defs/PullResponse" },
    "Snapshot": { "$ref": "#/$defs/Snapshot" },
    "PairingRequest": { "$ref": "#/$defs/PairingRequest" }
  },
  "$defs": {
    "Operation": {
      "type": "object",
      "required": ["op_id", "device_id", "entity_type", "entity_id", "op_type", "payload_json", "created_at"],
      "properties": {
        "op_id": { "type": "string", "minLength": 1 },
        "server_sequence": { "type": "integer", "minimum": 1 },
        "device_id": { "type": "string" },
        "entity_type": { "enum": ["file", "folder", "workspace"] },
        "entity_id": { "type": "string", "minLength": 1 },
        "op_type": { "enum": ["create", "update", "delete", "move", "rename", "trash", "restore"] },
        "payload_json": { "type": "string" },
        "created_at": { "type": "string", "format": "date-time" },
        "client_sequence": { "type": "integer", "minimum": 0 },
        "last_seen_server_seq": { "type": "integer", "minimum": 0 }
      },
      "additionalProperties": false
    },
    "FilePayload": {
      "type": "object",
      "required": ["path"],
      "properties": {
        "path": { "$ref": "#/$defs/VaultPath" },
        "content": { "type": "string" },
        "dataBase64": { "type": "string", "contentEncoding": "base64" },
        "contentHash": { "type": "string", "pattern": "^[a-f0-9]{64}$" },
        "fromPath": { "$ref": "#/$defs/VaultPath" },
        "toPath": { "$ref": "#/$defs/VaultPath" }
      },
      "additionalProperties": false
    },
    "WorkspacePayload": {
      "type": "object",
      "required": ["workspaceId", "path", "name"],
      "properties": {
        "workspaceId": { "type": "string", "format": "uuid" },
        "path": { "$ref": "#/$defs/WorkspacePath" },
        "previousPath": { "$ref": "#/$defs/WorkspacePath" },
        "name": { "type": "string", "minLength": 1 },
        "metadata": { "type": "object", "additionalProperties": true }
      },
      "additionalProperties": false
    },
    "PushRequest": {
      "type": "object",
      "required": ["device_id", "ops"],
      "properties": {
        "device_id": { "type": "string", "minLength": 1 },
        "idempotency_key": { "type": "string" },
        "ops": { "type": "array", "items": { "$ref": "#/$defs/PushOperation" } }
      },
      "additionalProperties": false
    },
    "PullResponse": {
      "type": "object",
      "required": ["server_sequence", "ops"],
      "properties": {
        "server_sequence": { "type": "integer", "minimum": 0 },
        "ops": { "type": "array", "items": { "$ref": "#/$defs/Operation" } }
      },
      "additionalProperties": false
    },
    "PushOperation": {
      "type": "object",
      "required": ["op_id", "entity_type", "entity_id", "op_type", "payload_json", "created_at"],
      "properties": {
        "op_id": { "type": "string", "minLength": 1 },
        "entity_type": { "enum": ["file", "folder", "workspace"] },
        "entity_id": { "type": "string", "minLength": 1 },
        "op_type": { "enum": ["create", "update", "delete", "move", "rename", "trash", "restore"] },
        "payload_json": { "type": "string" },
        "created_at": { "type": "string", "format": "date-time" },
        "client_sequence": { "type": "integer", "minimum": 0 },
        "last_seen_server_seq": { "type": "integer", "minimum": 0 }
      },
      "additionalProperties": false
    },
    "SnapshotEntry": {
      "type": "object",
      "required": ["path", "type", "size", "modifiedAt"],
      "properties": {
        "path": { "$ref": "#/$defs/VaultPath" },
        "type": { "enum": ["file", "folder"] },
        "size": { "type": "integer", "minimum": 0 },
        "modifiedAt": { "type": "string", "format": "date-time" },
        "hash": { "type": "string", "pattern": "^[a-f0-9]{64}$" }
      },
      "additionalProperties": false
    },
    "Snapshot": {
      "type": "object",
      "required": ["version", "entries"],
      "properties": {
        "version": { "type": "integer", "minimum": 1 },
        "entries": { "type": "object", "additionalProperties": { "$ref": "#/$defs/SnapshotEntry" } },
        "unresolved": { "type": "object", "additionalProperties": { "type": "string" } }
      },
      "additionalProperties": true
    },
    "PairingRequest": {
      "type": "object",
      "required": ["login", "password", "device_name", "vault_id"],
      "properties": {
        "login": { "type": "string", "minLength": 1 },
        "password": { "type": "string", "minLength": 1 },
        "device_name": { "type": "string", "minLength": 1 },
        "client_version": { "type": "string" },
        "vault_id": { "type": "string", "minLength": 1 }
      },
      "additionalProperties": false
    },
    "VaultPath": {
      "type": "string",
      "minLength": 1,
      "not": { "pattern": "(^|/)\\.verstak(/|$)" }
    },
    "WorkspacePath": {
      "type": "string",
      "minLength": 1,
      "pattern": "^[^/]+$"
    }
  }
}