import { decoverto } from "./decoverto.ts";
import { FlowFile } from "./flow.ts";
import { ResourceTypeFile } from "./resource-type.ts";
import { ResourceFile } from "./resource.ts";
import { ScriptFile } from "./script.ts";
import { VariableFile } from "./variable.ts";
import { path } from "./deps.ts";
import { FolderFile } from "./folder.ts";
import { AppFile } from "./apps.ts";

// TODO: Remove this & replace with a "pull" that lets the object either pull the remote version or return undefined.
// Then combine those with diffing, which then gives the new push impl
export interface Resource {
  push(workspace: string, remotePath: string): Promise<void>;
}

export interface PushDiffs {
  pushDiffs(
    workspace: string,
    remotePath: string,
    diffs: Difference[],
  ): Promise<void>;
}

export interface DifferenceCreate {
  type: "CREATE";
  path: (string | number)[];
  value: any;
}

export interface DifferenceRemove {
  type: "REMOVE";
  path: (string | number)[];
  oldValue: any;
}

export interface DifferenceChange {
  type: "CHANGE";
  path: (string | number)[];
  value: any;
  oldValue: any;
}

export type Difference = DifferenceCreate | DifferenceRemove | DifferenceChange;

export function setValueByPath(
  obj: any,
  path: (string | number)[],
  value: any,
) {
  let i;
  let lastObj = undefined;
  for (i = 0; i < path.length - 1; i++) {
    if (!obj) {
      let oldNewObj;
      if (typeof path[i] === "number") {
        oldNewObj = [];
      } else {
        oldNewObj = {};
      }
      lastObj[path[i - 1]] = oldNewObj;
      obj = oldNewObj;
    }
    lastObj = obj;
    obj = obj[path[i]];
  }
  if (!obj) {
    let oldNewObj;
    if (typeof path[i] === "number") {
      oldNewObj = [];
    } else {
      oldNewObj = {};
    }
    lastObj[path[i - 1]] = oldNewObj;
    obj = oldNewObj;
  }
  obj[path[i]] = value;
}

export type GlobalOptions = {
  workspace: string | undefined;
  token: string | undefined;
};

export function inferTypeFromPath(
  p: string,
  obj: any,
):
  | ScriptFile
  | VariableFile
  | FlowFile
  | ResourceFile
  | ResourceTypeFile
  | FolderFile
  | AppFile {
  const typeEnding = getTypeStrFromPath(p);

  if (typeEnding === "folder") {
    return decoverto.type(FolderFile).plainToInstance(obj);
  } else if (typeEnding === "script") {
    return decoverto.type(ScriptFile).plainToInstance(obj);
  } else if (typeEnding === "variable") {
    return decoverto.type(VariableFile).plainToInstance(obj);
  } else if (typeEnding === "flow") {
    return decoverto.type(FlowFile).plainToInstance(obj);
  } else if (typeEnding === "resource") {
    return decoverto.type(ResourceFile).plainToInstance(obj);
  } else if (typeEnding === "resource-type") {
    return decoverto.type(ResourceTypeFile).plainToInstance(obj);
  } else if (typeEnding === "app") {
    return decoverto.type(AppFile).plainToInstance(obj);
  } else {
    throw new Error("infer type unreachable");
  }
}

export function getTypeStrFromPath(
  p: string,
):
  | "script"
  | "variable"
  | "flow"
  | "resource"
  | "resource-type"
  | "folder"
  | "app" {
  const parsed = path.parse(p);
  if (parsed.ext == ".go" || parsed.ext == ".ts" || parsed.ext == ".sh" || parsed.ext == ".py") {
    return 'script'
  }

  if (parsed.name === "folder.meta") {
    return "folder";
  }

  const typeEnding = parsed.name.split(".").at(-1);
  if (
    typeEnding === "script" || typeEnding === "variable" ||
    typeEnding === "flow" || typeEnding === "resource" ||
    typeEnding === "resource-type" || typeEnding === "app"
  ) {
    return typeEnding;
  } else {
    throw new Error("Could not infer type of path " + JSON.stringify(parsed));
  }
}