1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82
83. 83
84. 84
85. 85
86. 86
87. 87
88. 88
89. 89
90. 90
91. 91
92. 92
93. 93
94. 94
95. 95
96. 96
97. 97
98. 98
99. 99
100. 100
101. 101
102. 102
103. 103
104. 104
105. 105
106. 106
107. 107
108. 108
109. 109
110. 110

// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package migration

import (
	"fmt"
	"os"
	"strings"
	"time"

	"code.gitea.io/gitea/modules/json"
	"code.gitea.io/gitea/modules/log"

	"github.com/santhosh-tekuri/jsonschema/v5"
	"gopkg.in/yaml.v3"
)

// Load project data from file, with optional validation
func Load(filename string, data interface{}, validation bool) error {
	isJSON := strings.HasSuffix(filename, ".json")

	bs, err := os.ReadFile(filename)
	if err != nil {
		return err
	}

	if validation {
		err := validate(bs, data, isJSON)
		if err != nil {
			return err
		}
	}
	return unmarshal(bs, data, isJSON)
}

func unmarshal(bs []byte, data interface{}, isJSON bool) error {
	if isJSON {
		return json.Unmarshal(bs, data)
	}
	return yaml.Unmarshal(bs, data)
}

func getSchema(filename string) (*jsonschema.Schema, error) {
	c := jsonschema.NewCompiler()
	c.LoadURL = openSchema
	return c.Compile(filename)
}

func validate(bs []byte, datatype interface{}, isJSON bool) error {
	var v interface{}
	err := unmarshal(bs, &v, isJSON)
	if err != nil {
		return err
	}
	if !isJSON {
		v, err = toStringKeys(v)
		if err != nil {
			return err
		}
	}

	var schemaFilename string
	switch datatype := datatype.(type) {
	case *[]*Issue:
		schemaFilename = "issue.json"
	case *[]*Milestone:
		schemaFilename = "milestone.json"
	default:
		return fmt.Errorf("file_format:validate: %T has not a validation implemented", datatype)
	}

	sch, err := getSchema(schemaFilename)
	if err != nil {
		return err
	}
	err = sch.Validate(v)
	if err != nil {
		log.Error("migration validation with %s failed:\n%#v", schemaFilename, err)
	}
	return err
}

func toStringKeys(val interface{}) (interface{}, error) {
	var err error
	switch val := val.(type) {
	case map[string]interface{}:
		m := make(map[string]interface{})
		for k, v := range val {
			m[k], err = toStringKeys(v)
			if err != nil {
				return nil, err
			}
		}
		return m, nil
	case []interface{}:
		l := make([]interface{}, len(val))
		for i, v := range val {
			l[i], err = toStringKeys(v)
			if err != nil {
				return nil, err
			}
		}
		return l, nil
	case time.Time:
		return val.Format(time.RFC3339), nil
	default:
		return val, nil
	}
}