import type { ObjectSourceKind, TreeNode, TreeNodeType } from "@/types/database";
import { matchesShortcut, type ShortcutLikeEvent } from "@/lib/keyboardShortcuts";

export type TreeNodeRowAction = "open-data" | "toggle" | "none";
export type TreeNodeRowDoubleClickAction = "open-data" | "open-object-browser" | "open-object-browser-and-expand" | "open-source" | "open-saved-sql" | "toggle" | "none";
export type SidebarSelectionCopyAction = "copy-name" | "none";
export type SidebarActivation = "single" | "double";

const dataNodeTypes = new Set<TreeNodeType>(["table", "view", "materialized_view"]);
const toggleLeafNodeTypes = new Set<TreeNodeType>(["redis-db", "mq-tenant", "mongo-collection", "elasticsearch-index", "user-admin"]);
const objectBrowserNodeTypes = new Set<TreeNodeType>(["database", "schema", "object-browser"]);
const sourceNodeTypes = new Set<TreeNodeType>(["materialized_view", "procedure", "function", "sequence", "package", "package-body"]);
const savedSqlNodeTypes = new Set<TreeNodeType>(["saved-sql-file"]);
const tableChildGroupNodeTypes = new Set<TreeNodeType>(["group-columns", "group-indexes", "group-fkeys", "group-triggers", "group-partitions"]);
const databaseChildGroupNodeTypes = new Set<TreeNodeType>(["group-tables", "group-views", "group-materialized-views", "group-procedures", "group-functions", "group-sequences", "group-packages"]);

export function objectSourceKindForTreeNode(type: TreeNodeType): ObjectSourceKind | null {
  if (type === "view") return "VIEW";
  if (type === "materialized_view") return "MATERIALIZED_VIEW";
  if (type === "procedure") return "PROCEDURE";
  if (type === "function") return "FUNCTION";
  if (type === "sequence") return "SEQUENCE";
  if (type === "package") return "PACKAGE";
  if (type === "package-body") return "PACKAGE_BODY";
  return null;
}

export function treeNodeRowAction(type: TreeNodeType, canExpand: boolean, activation: SidebarActivation = "single"): TreeNodeRowAction {
  if (activation === "double") return "none";
  if (dataNodeTypes.has(type)) return "open-data";
  if (toggleLeafNodeTypes.has(type)) return "toggle";
  if (canExpand) return "toggle";
  return "none";
}

export function treeNodeRowDoubleClickAction(type: TreeNodeType, canOpenObjectBrowser: boolean, activation: SidebarActivation = "single", canExpand = false): TreeNodeRowDoubleClickAction {
  if (activation === "double") {
    if (dataNodeTypes.has(type)) return "open-data";
    if (sourceNodeTypes.has(type)) return "open-source";
    if (savedSqlNodeTypes.has(type)) return "open-saved-sql";
    if (toggleLeafNodeTypes.has(type)) return "toggle";
    if (canOpenObjectBrowser && objectBrowserNodeTypes.has(type) && canExpand) return "open-object-browser-and-expand";
    if (canOpenObjectBrowser && objectBrowserNodeTypes.has(type)) return "open-object-browser";
    if (canExpand) return "toggle";
  }
  if (canOpenObjectBrowser && objectBrowserNodeTypes.has(type)) return "open-object-browser";
  return "none";
}

export function sidebarSelectionCopyAction(event: ShortcutLikeEvent): SidebarSelectionCopyAction {
  return matchesShortcut(event, "Mod+C") ? "copy-name" : "none";
}

export function copyNameForTreeNode(node: TreeNode): string {
  if (tableChildGroupNodeTypes.has(node.type) && node.tableName) return node.tableName;
  if (databaseChildGroupNodeTypes.has(node.type)) return node.schema || node.database || node.label;
  if (node.type === "column") {
    if (node.meta && "name" in node.meta) return node.meta.name;
    return node.label.replace(/\s+\(.+\)$/, "");
  }
  return node.label;
}