from constants import *

def whichStateLookingFor(tractor, TillageUnit):
    searching_field = "toPlow"
    if tractor.header and tractor.hitch == "Crop Trailer":
        searching_field = "toCut"
    elif isinstance(tractor.hitch, TillageUnit) and tractor.hitch.load == "Nothing":
        searching_field = "toPlow"
    elif isinstance(tractor.hitch, TillageUnit) and tractor.hitch.load == "Water":
        searching_field = "toWater"
    elif isinstance(tractor.hitch, TillageUnit) and tractor.hitch.load == "Seeds":
        searching_field = "toSeed"
    elif isinstance(tractor.hitch, TillageUnit) and tractor.hitch.load == "Fertilizer":
        searching_field = "toFertilize"
    return searching_field

def nearestLookingField(board, tractor, TillageUnit):
    end_horizontal_index = 0
    end_vertical_index = 0
    searching_field = whichStateLookingFor(tractor, TillageUnit)
    for i in range(0, int(HORIZONTAL_TILES_NUMBER)):
        for j in range(0, int(VERTICAL_TILES_NUMBER)):
            field = board[i][j]
            if searching_field == field.state:
                end_horizontal_index = field.horizontal_index
                end_vertical_index = field.vertical_index
                break

    return end_horizontal_index, end_vertical_index

def graphsearch(tractor, board, TillageUnit):
    start_horizontal_index = tractor.horizontal_index
    start_vertical_index = tractor.vertical_index
    start_state = (start_horizontal_index, start_vertical_index)
    end_state = nearestLookingField(board, tractor, TillageUnit)
    print(start_state)
    print(end_state)