import { emitEvent, listenTo } from "./events.js";
import {
  getPlannerCellDom,
  getPlannerCellsDom,
  getPlannerDom,
  getPlannerMultiblockSize,
  getPlannerMultiblockType
} from "./planner.js";
import { checkEquivalence, findFullEntry, findFullEntryFromAtlasMetadata } from "./ncpf-utils.js";
import { getMetadata, setCellMetadata, setDomMetadata } from "./metadata.js";
import { registerLoadCallback } from "./main.js";
import { getAtlasMetadata } from "./atlas.js";
import { initialize3dArray } from "./js-utils.js";

registerLoadCallback(() => {
  listenTo("fileLoad:end", runSolver);
  listenTo("planner:cell:change", runSolver);
});

export function resetSolver(design = undefined, designConfiguration) {
  const planner = getPlannerDom();
  if (design && designConfiguration) {
    planner.dataset.type = design.type;
    if (design.type === "nuclearcraft:overhaul_sfr") {
      // design has coolant_recipe and block_recipes
      const designCoolantRecipe = designConfiguration.coolant_recipes[design.coolant_recipe];
      const fullCoolantRecipe = findFullEntry(
          "coolant_recipes",
          designCoolantRecipe,
          { configurationHint: design.type },
      );
      setDomMetadata(planner, { coolant_recipe: fullCoolantRecipe });

      const designBlockRecipes = design.block_recipes.flat(3);
      for (let x = 0; x < design.dimensions[0]; x++) {
        for (let y = 0; y < design.dimensions[1]; y++) {
          for (let z = 0; z < design.dimensions[2]; z++) {
            const block = designConfiguration.blocks[design.design[x][y][z]];
            if (!block || !block.modules || !block.modules["ncpf:block_recipes"]) continue;
            const blockRecipeIndex = designBlockRecipes.shift();
            const blockRecipe = block.modules["ncpf:block_recipes"].recipes[blockRecipeIndex];
            setCellMetadata(getPlannerCellDom(x, y, z), "block_recipe", blockRecipe);
          }
        }
      }
    }
  }

  emitEvent("solver:reset:done");
}

const sixAxes = [
  {x: -1, y: 0, z: 0},
  {x: 0, y: -1, z: 0},
  {x: 0, y: 0, z: -1},
  {x: 1, y: 0, z: 0},
  {x: 0, y: 1, z: 0},
  {x: 0, y: 0, z: 1},
]
function *travelUntil(grid, { x, y, z }, {x: dirX = 0, y: dirY = 0, z: dirZ = 0}, shouldStop = (pos) => false) {
  x = Number(x);
  y = Number(y);
  z = Number(z);
  while (!shouldStop({x, y, z})
        && x > 0 && y > 0 && z > 0
        && x < grid.length - 1 && y < grid[0].length - 1 && z < grid[0][0].length - 1) {
    x += dirX;
    y += dirY;
    z += dirZ;
    yield grid[x][y][z];
  }
}

export function runSolver() {
  emitEvent("solver:begin")

  const multiblockType = getPlannerMultiblockType();

  const plannerBlocks = getPlannerCellsDom()
      .map(b => ({ dom: b, ...b.dataset }))
      .filter(b => b.tile !== "-1")
      .map(b => (b.metadata ? { ...b, metadata: getMetadata(b.metadata) } : b));
  const tileMap = Object.fromEntries([...new Set(plannerBlocks.map(b => b.tile))]
      .map(idx => [idx, getAtlasMetadata(idx)])
      .map(([idx, md]) => [idx, findFullEntry("blocks", md, { configurationHint: multiblockType })]));
  plannerBlocks.forEach(v => v.tile = tileMap[v.tile]);

  const plannerBlocksGrid = initialize3dArray(...getPlannerMultiblockSize());
  plannerBlocks.forEach(b => {
    plannerBlocksGrid[b.x][b.y][b.z] = b;
  });

  if (multiblockType === "nuclearcraft:overhaul_sfr") {
    const fuelCells = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:fuel_cell"]);
    // const neutronSources = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:neutron_source"]);
    // const reflectors = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:reflector"]);
    // const shields = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:neutron_shield"]);
    // const moderators = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:moderator"]);
    // const coolers = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:heat_sink"]);
    // const irradiators = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:irradiator"]);
    // const conductors = plannerBlocks.filter(b => b.tile.modules && b.tile.modules["nuclearcraft:overhaul_sfr:conductor"]);

    fuelCells.forEach(cell => {
      const recipeList = cell.tile.modules["ncpf:block_recipes"].recipes;
      cell.recipe = recipeList.find(r => checkEquivalence(r, cell.metadata.block_recipe));
      cell.axes = sixAxes.map(dir => [...travelUntil(
          plannerBlocksGrid,
          cell,
          dir,
          ({x, y, z}) => {
            const block = plannerBlocksGrid[x][y][z];
            if (block === cell) {
              return false;
            }
            if (!block) {
              return false;
            }
            if (block.tile.modules) {
              if (block.tile.modules["nuclearcraft:overhaul_sfr:fuel_cell"]) return true;
              if (block.tile.modules["nuclearcraft:overhaul_sfr:reflector"]) return true;
            }
            return false;
          }
      )]);
      if (cell.recipe.modules["nuclearcraft:overhaul_sfr:fuel_stats"].self_priming) {
        cell.primer = cell;
      } else if (cell.axes.some(a => (a[a.length - 1]?.tile?.modules ?? {})["nuclearcraft:overhaul_sfr:neutron_source"])) {
        const primerAxis = cell.axes.find(a => (a[a.length - 1]?.tile?.modules ?? {})["nuclearcraft:overhaul_sfr:neutron_source"]);
        cell.primer = primerAxis[primerAxis.length - 1];
      }
    });
    console.log(fuelCells);
  }
}