Updated to using managed types instead of

hard coded ones.

scripts/migrate-managed-types.sql

@@ -0,0 +1,92 @@
+USE emergency_tracker;
+
+-- Create managed types table for dynamic fields, departments, and teams.
+CREATE TABLE IF NOT EXISTS managed_types (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    type ENUM('field', 'department', 'team') NOT NULL,
+    name VARCHAR(100) NOT NULL,
+    parent_id INT DEFAULT NULL,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE KEY uniq_type_name (type, name),
+    INDEX idx_managed_parent (parent_id),
+    CONSTRAINT fk_managed_parent FOREIGN KEY (parent_id) REFERENCES managed_types(id) ON DELETE RESTRICT
+);
+
+-- If managed_types already existed, add hierarchy columns safely.
+SET @parent_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'managed_types'
+    AND COLUMN_NAME = 'parent_id'
+);
+SET @add_parent_sql = IF(@parent_exists = 0, 'ALTER TABLE managed_types ADD COLUMN parent_id INT DEFAULT NULL', 'SELECT 1');
+PREPARE add_parent_stmt FROM @add_parent_sql;
+EXECUTE add_parent_stmt;
+DEALLOCATE PREPARE add_parent_stmt;
+
+SET @idx_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.STATISTICS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'managed_types'
+    AND INDEX_NAME = 'idx_managed_parent'
+);
+SET @add_index_sql = IF(@idx_exists = 0, 'ALTER TABLE managed_types ADD INDEX idx_managed_parent (parent_id)', 'SELECT 1');
+PREPARE add_index_stmt FROM @add_index_sql;
+EXECUTE add_index_stmt;
+DEALLOCATE PREPARE add_index_stmt;
+
+SET @fk_exists = (
+  SELECT COUNT(*)
+  FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'managed_types'
+    AND CONSTRAINT_NAME = 'fk_managed_parent'
+);
+SET @add_fk_sql = IF(@fk_exists = 0, 'ALTER TABLE managed_types ADD CONSTRAINT fk_managed_parent FOREIGN KEY (parent_id) REFERENCES managed_types(id) ON DELETE RESTRICT', 'SELECT 1');
+PREPARE add_fk_stmt FROM @add_fk_sql;
+EXECUTE add_fk_stmt;
+DEALLOCATE PREPARE add_fk_stmt;
+
+-- Relax enum columns so new values can be inserted dynamically.
+ALTER TABLE users MODIFY COLUMN field VARCHAR(100) DEFAULT NULL;
+ALTER TABLE users MODIFY COLUMN department VARCHAR(100) DEFAULT NULL;
+ALTER TABLE users MODIFY COLUMN team VARCHAR(100) DEFAULT NULL;
+
+-- Seed managed types from existing user data.
+INSERT IGNORE INTO managed_types (type, name, parent_id)
+SELECT 'field', field, NULL
+FROM users
+WHERE field IS NOT NULL AND field <> ''
+GROUP BY field;
+
+INSERT IGNORE INTO managed_types (type, name, parent_id)
+SELECT 'department', department, field_types.id
+FROM users
+JOIN managed_types field_types
+  ON field_types.type = 'field' AND field_types.name = users.field
+WHERE department IS NOT NULL AND department <> ''
+GROUP BY department, field_types.id;
+
+INSERT IGNORE INTO managed_types (type, name, parent_id)
+SELECT 'team', team, department_types.id
+FROM users
+JOIN managed_types department_types
+  ON department_types.type = 'department' AND department_types.name = users.department
+WHERE team IS NOT NULL AND team <> ''
+GROUP BY team, department_types.id;
+
+-- Backfill parent_id for existing managed types if they were created without hierarchy.
+UPDATE managed_types department_types
+JOIN users ON department_types.type = 'department' AND department_types.name = users.department
+JOIN managed_types field_types ON field_types.type = 'field' AND field_types.name = users.field
+SET department_types.parent_id = field_types.id
+WHERE department_types.parent_id IS NULL;
+
+UPDATE managed_types team_types
+JOIN users ON team_types.type = 'team' AND team_types.name = users.team
+JOIN managed_types department_types
+  ON department_types.type = 'department' AND department_types.name = users.department
+SET team_types.parent_id = department_types.id
+WHERE team_types.parent_id IS NULL;