package humaninterface_test

import (
    "testing"
    "time"

    "pkg.jfrech.com/brief/humaninterface"
)

func TestParse(t *testing.T) {
    now := time.Date(2023, time.February, 20, 14, 23, 0, 0, time.FixedZone("CET", +1*60*60))

    for test, want := range map[string]humaninterface.Timespan{
        "today": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 0, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 21, 0, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "now": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 14, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 14, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "now--now": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 14, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 14, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "now-1h--now+2h": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 13, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 16, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "now~3h": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 11, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 17, 23, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "now~11s": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 14, 23, -11, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 14, 23, +11, 0, time.FixedZone("CET", +1*60*60)),
        },
        "now~3h~11m": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 11, 12, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 17, 34, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "today+1h": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 1, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 21, 1, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "today-1h-30m": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, -1, -30, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 21, -1, -30, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "today+1h-1h+1h-60m+3603s": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, 1, 0, 3, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 21, 1, 0, 3, 0, time.FixedZone("CET", +1*60*60)),
        },
        // TODO allow "today+-5h"
        "today~5h": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 20, -5, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 21, +5, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "yesterday": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 19, 0, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 0, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
        "yesterday+1h": humaninterface.Timespan{
            T0: time.Date(2023, time.February, 19, 1, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
            T1: time.Date(2023, time.February, 20, 1, 0, 0, 0, time.FixedZone("CET", +1*60*60)),
        },
    } {
        got, err := humaninterface.Parse(now, test)
        if err != nil {
            t.Errorf("test %q: no parse: %v", test, err)
            continue
        }
        if !want.Equal(got) {
            t.Errorf("test %q:\n    want: %v\n    got.: %v", test, want, got)
        }
    }
}