package config

import (
	"context"
	"fmt"
	"log/slog"
	"maps"
	"slices"

	"git.avsdev.uk/Go/job-search/internal/logging"
)

// PrintTerminal prints the configuration to stdout as String formats it.
func (c JobSearchConfig) PrintTerminal() {
	fmt.Print(c.String() + "\n")
}

// PrintJSON prints the configuration to stdout as JSON.
func (c JobSearchConfig) PrintJSON() {
	fmt.Print(c.JSON() + "\n")
}

// PrintYAML prints the configuration to stdout as YAML.
func (c JobSearchConfig) PrintYAML() {
	fmt.Print(c.YAML() + "\n")
}

// PrintLog logs each configuration key and value, sorted by key, at atLevel:
// debug, warn, error, or info for any other level. On a terminal it logs one
// line and prints the values under it as "key = value" lines; elsewhere each
// value is a log entry of its own.
func (c JobSearchConfig) PrintLog(atLevel slog.Level) {
	switch atLevel {
	case slog.LevelDebug, slog.LevelWarn, slog.LevelError:
	default:
		atLevel = slog.LevelInfo
	}

	ctx := context.Background()
	logger := slog.Default()
	flat := c.Flatten()
	keys := slices.Sorted(maps.Keys(flat))

	if logging.WritesToTerminal(logger.Handler()) {
		if !logger.Enabled(ctx, atLevel) {
			return
		}
		logger.Log(ctx, atLevel, "config values", "count", len(keys))
		for _, key := range keys {
			logging.PrintToTerminal(fmt.Sprintf("\t%s = %v", key, flat[key]))
		}
		return
	}

	for _, key := range keys {
		logger.Log(ctx, atLevel, "config value", "key", key, "value", flat[key])
	}
}