// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package browser

import (
	"fmt"
	"strconv"
	"sync"

	"github.com/minio/minio/internal/config"
	"github.com/minio/pkg/v3/env"
)

// Browser sub-system constants
const (
	// browserCSPPolicy setting name for Content-Security-Policy response header value
	browserCSPPolicy = "csp_policy"

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package browser

import "github.com/minio/minio/internal/config"

// Help template for browser feature.
var (
	defaultHelpPostfix = func(key string) string {
		return config.DefaultHelpPostfix(DefaultKVS, key)
	}

	Help = config.HelpKVS{
		config.HelpKV{

	graphID  = regexp.MustCompile(`<g id="graph\d"`)
	svgClose = regexp.MustCompile(`</svg>`)
)

// massageSVG enhances the SVG output from DOT to provide better
// panning inside a web browser. It uses the svgpan library, which is
// embedded into the svgpan.JSSource variable.
func massageSVG(svg string) string {
	// Work around for dot bug which misses quoting some ampersands,
	// resulting on unparsable SVG.

		var builder strings.Builder
		startupBanner(&builder)
		logger.Info(builder.String())
	}

	strippedAPIEndpoints := stripStandardPorts(apiEndpoints, globalMinioHost)

	// Prints credential, region and browser access.
	printServerCommonMsg(strippedAPIEndpoints)

	// Prints `mc` cli configuration message chooses
	// first endpoint as default.
	printCLIAccessMsg(strippedAPIEndpoints[0], "myminio")

	// accordingly. Client receives a HTTP error for invalid/unsupported
	// signatures.
	//
	// Validates all incoming requests to have a valid date header.
	setAuthMiddleware,
	// Redirect some pre-defined browser request paths to a static location
	// prefix.
	setBrowserRedirectMiddleware,
	// Adds 'crossdomain.xml' policy middleware to serve legacy flash clients.
	setCrossDomainPolicyMiddleware,

	"cmd/go/internal/web"
	"cmd/go/internal/work"
)

var CmdBug = &base.Command{
	Run:       runBug,
	UsageLine: "go bug",
	Short:     "start a bug report",
	Long: `
Bug opens the default browser and starts a new bug report.
The report includes useful system information.
	`,
}

func init() {
	CmdBug.Flag.BoolVar(&cfg.BuildV, "v", false, "")
	base.AddChdirFlag(&CmdBug.Flag)
}

parameter is not, and seeks to preserve the properties below in the face
of untrusted data:

Structure Preservation Property:
"... when a template author writes an HTML tag in a safe templating language,
the browser will interpret the corresponding portion of the output as a tag
regardless of the values of untrusted data, and similarly for other structures
such as attribute boundaries and JS and CSS string boundaries."

		}
		buf.WriteByte('\n')
	}
	return buf.String()
}

// Dot returns the control-flow graph in the [Dot graph description language].
// Use a command such as 'dot -Tsvg' to render it in a form viewable in a browser.
// This method is provided as a debugging aid; the details of the
// output are unspecified and may change.
//
// [Dot graph description language]: ​​https://en.wikipedia.org/wiki/DOT_(graph_description_language)

	PrintErr(...interface{})

	// IsTerminal returns whether the UI is known to be tied to an
	// interactive terminal (as opposed to being redirected to a file).
	IsTerminal() bool

	// WantBrowser indicates whether a browser should be opened with the -http option.
	WantBrowser() bool

	// SetAutoComplete instructs the UI to call complete(cmd) to obtain
	// the auto-completion of cmd, if the UI supports auto-completion at all.

	PrintErr(...interface{})

	// IsTerminal returns whether the UI is known to be tied to an
	// interactive terminal (as opposed to being redirected to a file).
	IsTerminal() bool

	// WantBrowser indicates whether browser should be opened with the -http option.
	WantBrowser() bool

	// SetAutoComplete instructs the UI to call complete(cmd) to obtain
	// the auto-completion of cmd, if the UI supports auto-completion at all.