import {CompilationTargetId} from "../../types/CompilationTargetId";
import {ChunkType} from "../chunks/types/ChunkType";
import {ScriptChunk} from "../chunks/types/ScriptChunk";
import {includeChunkToIncludeDef} from "./includeChunkToIncludeDef";
import {nodeChunkToNodeDef} from "./nodeChunkToNodeDef";
import {IncludeDef} from "./types/IncludeDef";
import {NodeDefs} from "./types/NodeDefs";
import {ScriptDef} from "./types/ScriptDef";
import {getIsExportedFromNodeChunk} from "./utils/getIsExportedFromNodeChunk";
import {getNodeNameFromNodeChunk} from "./utils/getNodeNameFromNodeChunk";

export function scriptChunkToScriptDef(
  scriptChunk: ScriptChunk,
  targetId: CompilationTargetId
): ScriptDef {
  const {children = []} = scriptChunk;
  const includeDefs: Array<IncludeDef> = [];
  const nodeDefs: NodeDefs = {};
  const nodeExports: Array<string> = [];
  const result: ScriptDef = {
    includeDefs,
    nodeDefs,
    nodeExports
  };
  for (const chunk of children) {
    switch (chunk.type) {
    case ChunkType.Include:
      includeDefs.push(includeChunkToIncludeDef(chunk));
      break;
    case ChunkType.Node:
      const nodeName = getNodeNameFromNodeChunk(chunk);
      if (nodeName) {
        nodeDefs[nodeName] = nodeChunkToNodeDef(chunk, targetId);
        const isExported = getIsExportedFromNodeChunk(chunk);
        if (isExported) {
          nodeExports.push(nodeName);
        }
      } else {
        result.mainDef = nodeChunkToNodeDef(chunk, targetId);
      }
      break;
    }
  }
  return result;
}