{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "DBDR Template Variables",
  "description": "Schema for Database Decision Record template variables",
  "type": "object",
  "required": ["number", "title", "status", "dbType", "owner", "context", "decision", "migrationStrategy", "rollbackPlan"],
  "properties": {
    "number": {
      "type": "integer",
      "minimum": 1,
      "description": "DBDR number for ordering and reference"
    },
    "title": {
      "type": "string",
      "minLength": 5,
      "maxLength": 150,
      "description": "Title of the database decision"
    },
    "status": {
      "type": "string",
      "enum": ["Proposed", "Approved", "Implemented", "Rolled Back"],
      "description": "Current status of the decision"
    },
    "dbType": {
      "type": "string",
      "enum": ["PostgreSQL", "MySQL", "MongoDB", "SQLite", "Supabase", "Other"],
      "description": "Database type"
    },
    "owner": {
      "type": "string",
      "minLength": 1,
      "description": "Decision owner"
    },
    "context": {
      "type": "string",
      "minLength": 20,
      "description": "Context and problem statement"
    },
    "currentState": {
      "type": "string",
      "description": "Current database state"
    },
    "dataVolume": {
      "type": "object",
      "properties": {
        "current": { "type": "string" },
        "projected": { "type": "string" },
        "retention": { "type": "string" }
      },
      "description": "Data volume considerations"
    },
    "decision": {
      "type": "string",
      "minLength": 20,
      "description": "The database decision being made"
    },
    "rationale": {
      "type": "string",
      "description": "Reasoning behind the decision"
    },
    "schemaChanges": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["table", "changeType"],
        "properties": {
          "table": {
            "type": "string",
            "description": "Table name"
          },
          "changeType": {
            "type": "string",
            "enum": ["CREATE", "ALTER", "DROP", "INDEX", "CONSTRAINT"],
            "description": "Type of schema change"
          },
          "description": {
            "type": "string",
            "description": "Description of the change"
          },
          "sql": {
            "type": "string",
            "description": "SQL statement for the change"
          }
        }
      },
      "description": "Schema changes to be made"
    },
    "migrationStrategy": {
      "type": "string",
      "minLength": 20,
      "description": "Strategy for migrating data"
    },
    "migrationPhases": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["phase"],
        "properties": {
          "phase": { "type": "string" },
          "duration": { "type": "string" },
          "description": { "type": "string" },
          "validation": { "type": "string" }
        }
      },
      "description": "Migration phases"
    },
    "dataMigrationScripts": {
      "type": "string",
      "description": "SQL scripts for data migration"
    },
    "performanceMetrics": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["metric"],
        "properties": {
          "metric": { "type": "string" },
          "before": { "type": "string" },
          "after": { "type": "string" },
          "acceptable": { "type": "string" }
        }
      },
      "description": "Expected performance impact"
    },
    "indexes": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["name", "table", "columns"],
        "properties": {
          "name": { "type": "string" },
          "table": { "type": "string" },
          "columns": { "type": "string" },
          "reason": { "type": "string" }
        }
      },
      "description": "Index strategy"
    },
    "rollbackPlan": {
      "type": "string",
      "minLength": 20,
      "description": "Plan for rolling back changes"
    },
    "rollbackScripts": {
      "type": "string",
      "description": "SQL scripts for rollback"
    },
    "rollbackTriggers": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["condition", "action"],
        "properties": {
          "condition": { "type": "string" },
          "action": { "type": "string" }
        }
      },
      "description": "Conditions that trigger rollback"
    },
    "preMigrationTests": {
      "type": "array",
      "items": { "type": "string" },
      "description": "Tests to run before migration"
    },
    "postMigrationValidation": {
      "type": "array",
      "items": { "type": "string" },
      "description": "Validation steps after migration"
    },
    "positiveConsequences": {
      "type": "array",
      "items": { "type": "string" },
      "description": "Positive outcomes"
    },
    "negativeConsequences": {
      "type": "array",
      "items": { "type": "string" },
      "description": "Negative outcomes or trade-offs"
    },
    "relatedDBDRs": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["number", "title"],
        "properties": {
          "number": { "type": "integer" },
          "title": { "type": "string" }
        }
      },
      "description": "Related DBDR references"
    },
    "relatedADRs": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["number", "title"],
        "properties": {
          "number": { "type": "integer" },
          "title": { "type": "string" }
        }
      },
      "description": "Related ADR references"
    }
  }
}