//
//  NavDataParser.m
//  FMC Planner 2
//
//  Created by Kilian Hofmann on 13.04.16.
//  Copyright © 2016 Kilian Hofmann. All rights reserved.
//

#import "NavDataParser.h"

@implementation NavDataParser

NSString *const Airways = @"NAVDATA/awys.txt";
NSString *const Intersections = @"NAVDATA/ints.txt";
NSString *const Navaids = @"NAVDATA/navs.txt";

- (id)init
{
    self = [super init];
    self.parserReady = false;
    self.notActive = false;
    // Load Navaids
    NSArray *temp = [[NSString
        stringWithContentsOfFile:[SharedDeclerations savePathForFile:Navaids]
                        encoding:NSASCIIStringEncoding
                           error:nil] componentsSeparatedByString:@"\r\n"];
    self.navaids = [[NSMutableDictionary alloc] init];
    for (NSString *str in temp) {
        if (str.length > 0 &&
            ![[str substringToIndex:1] isEqualToString:@";"]) {
            if ([self.navaids objectForKey:[str substringToIndex:5]] != nil) {
                // Item exists, make array and set that.
                NSMutableArray *temp2 = [[NSMutableArray alloc] init];
                [temp2 addObject:[str substringFromIndex:10]];
                if ([[self.navaids objectForKey:[str substringToIndex:5]]
                        isKindOfClass:[NSArray class]]) {
                    [temp2 addObjectsFromArray:
                               [self.navaids
                                   objectForKey:[str substringToIndex:5]]];
                }
                else {
                    [temp2
                        addObject:[self.navaids
                                      objectForKey:[str substringToIndex:5]]];
                }
                [self.navaids setValue:temp2 forKey:[str substringToIndex:5]];
            }
            else {
                [self.navaids setValue:[str substringFromIndex:10]
                                forKey:[str substringToIndex:5]];
            }
        }
    }

    // Load Intersections
    temp = [[NSString
        stringWithContentsOfFile:[SharedDeclerations
                                     savePathForFile:Intersections]
                        encoding:NSASCIIStringEncoding
                           error:nil] componentsSeparatedByString:@"\r\n"];
    self.intersections = [[NSMutableDictionary alloc] init];
    for (NSString *str in temp) {
        if (str.length > 0 &&
            ![[str substringToIndex:1] isEqualToString:@";"]) {
            if ([self.intersections objectForKey:[str substringToIndex:5]] !=
                nil) {
                // Item exists, make array and set that.
                NSMutableArray *temp2 = [[NSMutableArray alloc] init];
                [temp2 addObject:[str substringFromIndex:10]];
                if ([[self.intersections objectForKey:[str substringToIndex:5]]
                        isKindOfClass:[NSArray class]]) {
                    [temp2 addObjectsFromArray:
                               [self.intersections
                                   objectForKey:[str substringToIndex:5]]];
                }
                else {
                    [temp2
                        addObject:[self.intersections
                                      objectForKey:[str substringToIndex:5]]];
                }
                [self.intersections setValue:temp2
                                      forKey:[str substringToIndex:5]];
            }
            else {
                [self.intersections setValue:[str substringFromIndex:10]
                                      forKey:[str substringToIndex:5]];
            }
        }
    }

    // Load Airways
    temp = [[NSString
        stringWithContentsOfFile:[SharedDeclerations savePathForFile:Airways]
                        encoding:NSASCIIStringEncoding
                           error:nil] componentsSeparatedByString:@"\r\n"];
    self.airways = [[NSMutableDictionary alloc] init];
    for (NSString *str in temp) {
        if (str.length > 0 &&
            ![[str substringToIndex:1] isEqualToString:@";"]) {
            if ([self.airways objectForKey:[str substringToIndex:5]] != nil) {
                // Item exists, make array and set that.
                NSMutableArray *temp2 = [[NSMutableArray alloc] init];
                [temp2 addObject:[str substringFromIndex:10]];
                if ([[self.airways objectForKey:[str substringToIndex:5]]
                        isKindOfClass:[NSArray class]]) {
                    [temp2 addObjectsFromArray:
                               [self.airways
                                   objectForKey:[str substringToIndex:5]]];
                }
                else {
                    [temp2
                        addObject:[self.airways
                                      objectForKey:[str substringToIndex:5]]];
                }
                [self.airways setValue:temp2 forKey:[str substringToIndex:5]];
            }
            else {
                [self.airways setValue:[str substringFromIndex:10]
                                forKey:[str substringToIndex:5]];
            }
        }
    }

    if (self.navaids == nil || self.intersections == nil ||
        self.airways == nil) {
        self.notActive = true;
    }

    self.parserReady = true;
    return self;
}

#pragma mark - Search for elements in normal route entry

- (NSArray *)findAirway:(NSString *)airway
{
    return nil;
}

/**
 * Find the given waypoint in both files, returns Array so user can select
 * @param waypoint
 */
- (NSArray *)findWaypoint:(NSString *)waypoint
{
    NSMutableArray *array = [[NSMutableArray alloc] init];
    for (int i = (int)waypoint.length; i < 5; i++) {
        waypoint = [waypoint stringByAppendingString:@" "];
    }

    id navaids = [_navaids objectForKey:waypoint];
    id intersections = [_intersections objectForKey:waypoint];

    if (navaids != nil) {
        if ([navaids isKindOfClass:[NSArray class]]) {
            [array addObjectsFromArray:navaids];
        }
        else {
            [array addObject:navaids];
        }
    }

    if (intersections != nil) {
        if ([intersections isKindOfClass:[NSArray class]]) {
            [array addObjectsFromArray:intersections];
        }
        else {
            [array addObject:intersections];
        }
    }

    return array;
}

@end