Module: StateMate::Adapters::JSON

Includes:
StateMate::Adapters
Defined in:
lib/state_mate/adapters/json.rb

Constant Summary

Constants included from StateMate::Adapters

API_METHOD_NAMES, DEFAULT_KEY_SEP

Class Method Summary collapse

Methods included from StateMate::Adapters

get, included, register

Class Method Details

.parse_key(key) ⇒ Object 



10
11
12
13
 
# File 'lib/state_mate/adapters/json.rb', line 10

def self.parse_key key
  # use the same key separation as Defaults
  StateMate::Adapters::Defaults.parse_key key
end

.read(key, options = {}) ⇒ Object 



15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'lib/state_mate/adapters/json.rb', line 15

def self.read key, options = {}
  filepath, key_segs = parse_key key

  contents = File.read(File.expand_path(filepath))

  value = ::JSON.load contents

  key_segs.each do |seg|
    value = if (value.is_a?(Hash) && value.key?(seg))
      value[seg]
    else
      nil
    end
  end

  value
end

.write(key, value, options = {}) ⇒ Object 



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
 
# File 'lib/state_mate/adapters/json.rb', line 33

def self.write key, value, options = {}
  options = {
    'pretty' => true,
  }.merge options

  filepath, key_segs = parse_key key
  
  StateMate.debug "writing json",
    options: options,
    filepath: filepath,
    key_segs: key_segs

  new_root = if key_segs.empty?
    value
  else
    root = read filepath

    StateMate::Adapters::Defaults.hash_deep_write!(
      root,
      key_segs,
      value
    )

    root
  end
  
  StateMate.debug new_root: new_root

  content = if options['pretty']
    ::JSON.pretty_generate new_root
  else
    ::JSON.dump new_root
  end

  File.open(filepath, 'w') do |f|
    f.write content
  end
end