34 lines
808 B
Go
34 lines
808 B
Go
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package common
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import (
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"encoding/json"
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"fmt"
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)
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// Patch selected top-level fields against the latest file, under the same lock
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// used by game saves. Raw JSON retains 64-bit scores and unknown save sections.
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func PatchPersistentFields(patch map[string]json.RawMessage) error {
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if patch == nil {
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return fmt.Errorf("persistent patch must be a JSON object")
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}
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for _, raw := range patch {
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if !json.Valid(raw) {
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return fmt.Errorf("invalid persistent field JSON")
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}
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}
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persistentWriteMu.Lock()
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defer persistentWriteMu.Unlock()
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unlock, err := lockPersistentFile()
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if err != nil {
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return err
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}
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defer unlock()
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root, err := readCurrencyWarsPersistentRoot()
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if err != nil {
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return err
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}
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for key, value := range patch {
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root[key] = value
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}
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return writeJSONAtomic("persistent", root)
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}
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