#!/bin/bash
# Locate lockfile readers and JSON decoding paths involving Lockfile types.
ast-grep outline pkg/devcontainer/feature/lockfile.go --items all
ast-grep run --lang go --pattern 'json.Unmarshal($DATA, $TARGET)' pkg
rg -nP --type=go -C3 '\b(?:Lockfile|LockedFeature)\b|json\.NewDecoder\(' pkg

#!/bin/bash
set -euo pipefail

echo "== lockfile.go =="
sed -n '1,260p' pkg/devcontainer/feature/lockfile.go

echo "== call sites for newLockfileState / ReadLockfile / lockfileState =="
rg -n -C 4 'newLockfileState\(|ReadLockfile\(|\.loaded|checkFrozenPrecondition|lockfileMode|needsWrite|lockfileNeedsWrite' pkg/devcontainer pkg -g '*.go' | head -n 200

echo "== inspect devcontainer feature/extend relevant =="
sed -n '480,545p' pkg/devcontainer/feature/extend.go

#!/bin/bash
set -euo pipefail

echo "== Go JSON Unmarshal legacy object as []string behavior =="
go version 2>/dev/null || true
tmpdir="$(mktemp -d)"
trap 'rm -rf "$tmpdir"' EXIT

cat > "$tmpdir/unmarshal_probe.go" <<'GO'
package main

import (
	"encoding/json"
	"fmt"
)

type LockedFeature struct {
	Version   string   `json:"version,omitempty"`
	Resolved  string   `json:"resolved,omitempty"`
	Integrity string   `json:"integrity,omitempty"`
	DependsOn []string `json:"dependsOn,omitempty"`
}

type Lockfile struct {
	Features map[string]LockedFeature `json:"features"`
}

func main() {
	legacy := []byte(`{
  "features": {
    "ghcr.io/a/f:1": {"resolved": "sha256:00", "dependsOn": "nope"}
  }
}`)
	var lf Lockfile
	err := json.Unmarshal(legacy, &lf)
	fmt.Printf("legacy-object-string err=%v lf=%#v\n", err, lf)

	legacyMap := []byte(`{
  "features": {
    "ghcr.io/a/f:1": {"resolved": "sha256:00", "dependsOn": {"dep": true}}
  }
}`)
	err = json.Unmarshal(legacyMap, &lf)
	fmt.Printf("legacy-map err=%v lf=%#v\n", err, lf)

	current := []byte(`{
  "features": {
    "ghcr.io/a/f:1": {"resolved": "sha256:00", "dependsOn": ["dep"]}
  }
}`)
	err = json.Unmarshal(current, &lf)
	fmt.Printf("current-array err=%v lf=%#v\n", err, lf)
}
GO

go run "$tmpdir/unmarshal_probe.go"

echo "== inspect config DependsOn type for feature config keys =="
sed -n '1,60p' pkg/devcontainer/config/feature.go
rg -n -C 3 'DependsOn[A-Za-z0-9_]*|DependsOn' pkg/devcontainer/config pkg/devcontainer/feature/lockfile.go pkg/devcontainer/feature/extend.go