{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://deploydoubles.dev/schema/manifest-v0.1.json",
  "title": "Deploy Doubles manifest (double.json) v0.1",
  "description": "What a reference app needs and which checks must pass once it is deployed. Platforms must not read this file to configure an app.",
  "type": "object",
  "required": ["spec_version", "id", "description", "framework", "runtime", "services", "processes", "env", "expects"],
  "additionalProperties": false,
  "properties": {
    "$schema": { "type": "string" },
    "spec_version": { "const": "0.1" },
    "id": { "type": "string", "pattern": "^[a-z0-9]+(-[a-z0-9]+)*$", "maxLength": 64 },
    "description": { "type": "string", "minLength": 1, "maxLength": 200 },
    "framework": { "$ref": "#/$defs/component" },
    "runtime": { "$ref": "#/$defs/component" },
    "services": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "database": { "enum": ["mysql", "mariadb", "postgres", "sqlite"] },
        "cache": { "enum": ["redis", "valkey"] },
        "queue": { "enum": ["redis", "valkey", "database"] }
      }
    },
    "processes": {
      "type": "object",
      "required": ["web"],
      "additionalProperties": false,
      "properties": {
        "web": { "$ref": "#/$defs/process" },
        "worker": { "$ref": "#/$defs/process" },
        "scheduler": { "$ref": "#/$defs/process" }
      }
    },
    "env": {
      "type": "object",
      "required": ["required"],
      "additionalProperties": false,
      "properties": {
        "required": { "$ref": "#/$defs/envNames" },
        "generated": { "$ref": "#/$defs/envNames" }
      }
    },
    "build": { "$ref": "#/$defs/commands" },
    "release": { "$ref": "#/$defs/commands" },
    "persistent_paths": {
      "description": "Directories, relative to the app root, that must survive every deploy and be shared by all of the app's processes and releases. The deploy report's result store lives in one of them.",
      "type": "array",
      "uniqueItems": true,
      "maxItems": 16,
      "items": { "type": "string", "pattern": "^[A-Za-z0-9_][A-Za-z0-9._-]*(/[A-Za-z0-9_][A-Za-z0-9._-]*)*$", "maxLength": 200 }
    },
    "expects": {
      "type": "object",
      "required": ["inside", "outside"],
      "additionalProperties": false,
      "properties": {
        "inside": {
          "type": "array",
          "uniqueItems": true,
          "items": {
            "enum": ["database", "cache", "queue", "queue.release", "scheduler", "scheduler.release", "storage", "assets", "env"]
          }
        },
        "outside": {
          "type": "array",
          "uniqueItems": true,
          "items": {
            "enum": ["reachability", "tls", "https_redirect", "release", "run_id", "downtime", "rollback", "persistence", "detection"]
          }
        }
      }
    },
    "failure_modes": {
      "type": "array",
      "maxItems": 0
    }
  },
  "$defs": {
    "component": {
      "type": "object",
      "required": ["name", "version"],
      "additionalProperties": false,
      "properties": {
        "name": { "type": "string", "pattern": "^[a-z0-9-]+$" },
        "version": { "type": "string", "minLength": 1, "maxLength": 64 }
      }
    },
    "process": {
      "type": "object",
      "required": ["command"],
      "additionalProperties": false,
      "properties": {
        "command": { "type": "string", "minLength": 1, "maxLength": 300 }
      }
    },
    "envNames": {
      "type": "array",
      "uniqueItems": true,
      "items": { "type": "string", "pattern": "^[A-Z][A-Z0-9_]*$" }
    },
    "commands": {
      "type": "array",
      "items": { "type": "string", "minLength": 1, "maxLength": 300 }
    }
  }
}