github.com/aacfactory/fns@v1.2.86-0.20240310083819-80d667fc0a17/commons/times/time.go (about)

     1  /*
     2   * Copyright 2023 Wang Min Xiang
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   * 	http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   *
    16   */
    17  
    18  package times
    19  
    20  import (
    21  	"database/sql/driver"
    22  	"fmt"
    23  	"reflect"
    24  	"time"
    25  )
    26  
    27  func TimeNow() Time {
    28  	return TimeOf(time.Now())
    29  }
    30  
    31  func NewTime(hour int, min int, sec int) Time {
    32  	return Time{
    33  		Hour:    hour,
    34  		Minutes: min,
    35  		Second:  sec,
    36  	}
    37  }
    38  
    39  func TimeOf(t time.Time) Time {
    40  	return NewTime(t.Hour(), t.Minute(), t.Second())
    41  }
    42  
    43  type Time struct {
    44  	Hour    int
    45  	Minutes int
    46  	Second  int
    47  }
    48  
    49  func (t *Time) UnmarshalJSON(p []byte) error {
    50  	if p == nil || len(p) < 3 {
    51  		return nil
    52  	}
    53  	p = p[1 : len(p)-1]
    54  	v, parseErr := time.Parse(time.TimeOnly, string(p))
    55  	if parseErr != nil {
    56  		return fmt.Errorf("unmarshal %s failed, layout of date must be 15:04:05, %v", string(p), parseErr)
    57  	}
    58  	t.Hour = v.Hour()
    59  	t.Minutes = v.Minute()
    60  	t.Second = v.Second()
    61  	return nil
    62  }
    63  
    64  func (t Time) MarshalJSON() ([]byte, error) {
    65  	return []byte(fmt.Sprintf("\"%s\"", t.ToTime().Format(time.TimeOnly))), nil
    66  }
    67  
    68  func (t Time) ToTime() time.Time {
    69  	if t.Hour < 0 || t.Hour > 23 {
    70  		t.Hour = 0
    71  	}
    72  	if t.Minutes < 0 || t.Minutes > 59 {
    73  		t.Minutes = 0
    74  	}
    75  	if t.Second < 0 || t.Second > 59 {
    76  		t.Second = 0
    77  	}
    78  	return time.Date(1, 1, 1, t.Hour, t.Minutes, t.Second, 0, time.Local)
    79  }
    80  
    81  func (t Time) IsZero() (ok bool) {
    82  	ok = t.Hour == 0 && t.Minutes == 0 && t.Second == 0
    83  	return
    84  }
    85  
    86  func (t Time) String() string {
    87  	return t.ToTime().Format(time.TimeOnly)
    88  }
    89  
    90  func (t *Time) Scan(src interface{}) error {
    91  	if src == nil {
    92  		return nil
    93  	}
    94  	x := ""
    95  	switch src.(type) {
    96  	case string:
    97  		x = src.(string)
    98  		break
    99  	case []byte:
   100  		x = string(src.([]byte))
   101  		break
   102  	case time.Time:
   103  		v := src.(time.Time)
   104  		t.Hour = v.Hour()
   105  		t.Minutes = v.Minute()
   106  		t.Second = v.Second()
   107  		return nil
   108  	default:
   109  		return fmt.Errorf("fns: scan time raw value failed for %v is not supported", reflect.TypeOf(src).String())
   110  	}
   111  	if x == "" {
   112  		return nil
   113  	}
   114  	v, parseErr := time.Parse(time.TimeOnly, x)
   115  	if parseErr != nil {
   116  		return fmt.Errorf("fns: scan time date value failed, parse %s failed, %v", x, parseErr)
   117  	}
   118  	t.Hour = v.Hour()
   119  	t.Minutes = v.Minute()
   120  	t.Second = v.Second()
   121  	return nil
   122  }
   123  
   124  func (t Time) Value() (driver.Value, error) {
   125  	if t.IsZero() {
   126  		return nil, nil
   127  	}
   128  	return t.String(), nil
   129  }