/*
Copyright © 2026 Craig Williams <craig@avsdev.uk>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

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

import (
	"log/slog"

	"git.avsdev.uk/Go/job-search/internal/config"
	"git.avsdev.uk/Go/job-search/internal/log"
	"github.com/spf13/cobra"
)

type Options struct {
	configFile string
	debug      bool
	quiet      bool
}

// Binds common options through the root command
func (o *Options) Bind(cmd *cobra.Command) {
	pf := cmd.PersistentFlags()
	pf.StringVarP(&o.configFile, "config", "c", "", "configuration file")
	pf.BoolVarP(&o.debug, "debug", "d", false, "enable debug messages")
	pf.BoolVarP(
		&o.quiet, "quiet", "q", false, "don't report info or warning messages",
	)
}

// Setup loads the config and ensure logging is switch to file if needed
func (o *Options) RunSetup(
	cmd *cobra.Command, loadConfig bool, terminalLog bool,
) (*config.JobSearchConfig, error) {
	// Flags and arguments are valid from here on, so errors are runtime
	// failures: report them without cobra's usage text.
	cmd.SilenceUsage = true

	// Check for debug level or quiet supression via args
	conf := &config.JobSearchConfig{
		Logging: config.JobSearchConfigLogging{},
	}
	if o.debug {
		conf.Logging.Level = "debug"
	} else if o.quiet {
		conf.Logging.Level = "error"
	}

	// Only load config if command requests it (nearly always true)
	if loadConfig {
		// Load config - from specified file if provided
		if err := config.Init(o.configFile, conf); err != nil {
			return nil, err
		}

		// Change logging level based off newly loaded config
		if conf.Logging.LogLevel() <= slog.LevelDebug && !log.IsDebugEnabled() {
			log.EnableDebug()
		}

		// Check if the logging should be switched to file
		if !terminalLog {
			if len(conf.Logging.File) == 0 {
				slog.Warn("No log file configured, remaining in console logging mode!")
			} else {
				log.LogToFile(conf.Logging.File)
			}
		}
	}

	return conf, nil
}

// Finish shuts down any open file logger
func (o *Options) Finish() error {
	if log.IsFileLogger() {
		log.Shutdown()
	}

	return nil
}