latindate.js/date.js at main · pickwicksoft/latindate.js · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
console.log(dateToLatinDate(new Date("2022-12-05")))

function dateToLatinDate(date) {
    let day = date.getDate();
    let idus = getIdus(date.getMonth());
    let nonae = getNonae(idus);
    let lastDayOfMonth = getLastDayOfMonth(date.getMonth(), date.getFullYear());

    if (day === idus) {
        return getDateText("Idibus", 0, date);
    } else if (day === idus - 1) {
        return getDateText("Idus", 1, date)
    } else if (day === 1) {
        return getDateText("Kalendis", 0, date)
    } else if (day < idus) {
        if (day > nonae) {
            return getDateText("Idus", calcDaysBeforeEvent(idus, day), date)
        } else if (day === nonae) {
            return getDateText("Nonis", 0, date)
        } else if (day === nonae - 1) {
            return getDateText("Nonas", 1, date)
        } else {
            return getDateText("Nonas", calcDaysBeforeEvent(nonae, day), date)
        }
    } else if (day === lastDayOfMonth) {
        return getDateText("Kalendas", 1, date)
    } else {
        return getDateText("Kalendas", calcDaysBeforeEvent(lastDayOfMonth + 1, day), date)
    }
}

function getIdus(month) {
    month = month + 1 // JS is counting months from 0
    switch (month) {
        case 3: // March
        case 7: // July
        case 5: // May
        case 10: // October
            return 15;
        default: // The other months
            return 13;
    }
}

function getNonae(idus) {
    return idus - 8;
}

function getLastDayOfMonth(month, year) {
    const d = new Date(year, month + 1, 0);
    return d.getDate()
}

function calcDaysBeforeEvent(eventDate, calcDate) {
    return (eventDate - calcDate + 1)
}

function getDateText(event, daysBeforeEvent, currentDate) {
    let month = currentDate.getMonth()
    if (event.startsWith("Kalend") && (daysBeforeEvent !== 0)) {
        if (month === 11) month = -1;
        month = month + 1;
    }
    if (daysBeforeEvent === 0) {
        return event + " " + monthToLatin(month, true)
    } else if (daysBeforeEvent === 1) {
        return "Pridie " + event + " " + monthToLatin(month)
    }
    return "ante diem " + intToLatinTxtAkk(daysBeforeEvent) + " " + event + " " + monthToLatin(month)
}

function getLatinMonths(inAbl) {
    if (inAbl) {
        return ["Ianuariis", "Februariis", "Martiis", "Aprilibus", "Maiis", "Iuniis", "Iuliis", "Sextilibus",
            "Septembribus", "Octobribus", "Novembribus", "Decembribus"]
    }
    return ["Ianuarias", "Februarias", "Martias", "Apriles", "Maias", "Iunias", "Iulias", "Sextiles",
        "Septembres", "Octobres", "Novembres", "Decembres"]
}

function monthToLatin(month, inAbl=false) {
    return getLatinMonths(inAbl)[month]
}

function intToLatinTxtAkk(int) {
    let latNumber = "";
    if (int >= 10 && int < 20 && int !== 11 && int !== 12) {
        latNumber += "decimum ";
        int = int - 10;
    }
    console.log(int)
    switch (Number(int)) {
        case 1:
            latNumber += "unum";
            break; // Will not be used
        case 2:
            latNumber += "secundum";
            break;
        case 3:
            latNumber += "tertium";
            break;
        case 4:
            latNumber += "quartum";
            break;
        case 5:
            latNumber += "quintum";
            break;
        case 6:
            latNumber += "sextum";
            break;
        case 7:
            latNumber += "septimum";
            break;
        case 8:
            latNumber += "octavum";
            break;
        case 9:
            latNumber += "novum";
            break;
        case 11:
            latNumber += "undecimum";
            break;
        case 12:
            latNumber += "duodecimum";
    }
    return latNumber.trim()
}