// Patial Tech.
// Author, Ankit Patial

package main

import (
	"runtime/debug"
	"strings"
)

// Version returns the version of the pgm CLI tool.
// It tries to detect the version in the following order:
// 1. Build-time ldflags (set via: go build -ldflags "-X main.version=v1.2.3")
// 2. VCS information from build metadata (git tag/commit)
// 3. Falls back to "dev" if no version information is available
func Version() string {
	// If version was set at build time via ldflags
	if version != "" && version != "dev" {
		return version
	}

	// Try to get version from build info (Go 1.18+)
	if info, ok := debug.ReadBuildInfo(); ok {
		// Check for version in main module
		if info.Main.Version != "" && info.Main.Version != "(devel)" {
			return info.Main.Version
		}

		// Try to extract from VCS information
		var revision, modified string
		for _, setting := range info.Settings {
			switch setting.Key {
			case "vcs.revision":
				revision = setting.Value
			case "vcs.modified":
				modified = setting.Value
			}
		}

		// If we have a git revision
		if revision != "" {
			// Shorten commit hash to 7 characters
			if len(revision) > 7 {
				revision = revision[:7]
			}

			// Add -dirty suffix if modified
			if modified == "true" {
				return "dev-" + revision + "-dirty"
			}
			return "dev-" + revision
		}
	}

	// Fallback to dev
	return "dev"
}

// GetVersionString returns a formatted version string for display
func GetVersionString() string {
	v := Version()

	// Clean up version string for display
	v = strings.TrimPrefix(v, "v")

	return "v" + v
}