65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
package plugin
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"strings"
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)
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// Middleware is the gateway middleware a plugin at target has: the file
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// its package.json's magpie.middleware names, or the file itself for a
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// path to a *.middleware.js (or .mjs). only is whether it is nothing
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// else: no OpenCode plugin for the host to load (no main, no exports).
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func Middleware(target string) (file string, only bool) {
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st, err := os.Stat(target)
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if err != nil {
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return "", false
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}
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if !st.IsDir() {
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base := strings.ToLower(filepath.Base(target))
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if strings.HasSuffix(base, ".middleware.js") || strings.HasSuffix(base, ".middleware.mjs") {
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return target, true
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}
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return "", false
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}
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b, err := os.ReadFile(filepath.Join(target, "package.json"))
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if err != nil {
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return "", false
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}
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var pkg struct {
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Main string `json:"main"`
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Exports json.RawMessage `json:"exports"`
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Magpie struct {
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Middleware string `json:"middleware"`
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} `json:"magpie"`
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}
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if json.Unmarshal(b, &pkg) != nil || strings.TrimSpace(pkg.Magpie.Middleware) == "" {
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return "", false
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}
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file = filepath.Join(target, filepath.FromSlash(strings.TrimSpace(pkg.Magpie.Middleware)))
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return file, pkg.Main == "" && len(pkg.Exports) == 0
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}
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// ListStamp changes when plugins.json does.
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func ListStamp() string { return listStamp() }
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// OptionsExample is the options a plugin at target suggests, from its
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// package.json's magpie.options: what its options editor starts from
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// before any are set.
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func OptionsExample(target string) map[string]any {
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b, err := os.ReadFile(filepath.Join(target, "package.json"))
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if err != nil {
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return nil
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}
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var pkg struct {
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Magpie struct {
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Options map[string]any `json:"options"`
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} `json:"magpie"`
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}
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if json.Unmarshal(b, &pkg) != nil {
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return nil
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}
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return pkg.Magpie.Options
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}
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