package testserver

import (
	"fmt"
	"os"
	"path/filepath"
	"time"
)

// TraceStateScenarioStart logs the start of a scenario
func TraceStateScenarioStart(feature, scenario string) {
	writeTraceLine(feature, scenario, "SCENARIO_START", "")
}

// TraceStateScenarioEnd logs the end of a scenario
func TraceStateScenarioEnd(feature, scenario string, err error) {
	status := "PASSED"
	if err != nil {
		status = fmt.Sprintf("FAILED: %v", err)
	}
	writeTraceLine(feature, scenario, "SCENARIO_END", status)
}

// TraceStateDBCleanup logs a database cleanup operation
func TraceStateDBCleanup(feature, scenario, table string) {
	writeTraceLine(feature, scenario, "DB_CLEANUP", table)
}

// TraceStateJWTSecretOperation logs a JWT secret operation
func TraceStateJWTSecretOperation(feature, scenario, operation, details string) {
	writeTraceLine(feature, scenario, "JWT_"+operation, details)
}

// TraceStateSchemaIsolation logs a schema isolation operation
func TraceStateSchemaIsolation(feature, scenario, operation, details string) {
	writeTraceLine(feature, scenario, "SCHEMA_"+operation, details)
}

// TraceStateTransaction logs a transaction boundary
func TraceStateTransaction(feature, scenario, action, details string) {
	writeTraceLine(feature, scenario, "TX_"+action, details)
}

// TraceStateDBRead logs a database read operation
func TraceStateDBRead(feature, scenario, table, details string) {
	writeTraceLine(feature, scenario, "DB_SELECT", fmt.Sprintf("table=%s %s", table, details))
}

// StateTracingEnabled returns true if BDD_TRACE_STATE environment variable is set to "1"
func StateTracingEnabled() bool {
	return os.Getenv("BDD_TRACE_STATE") == "1"
}

// writeTraceLine writes a trace line to the state trace file in $TMPDIR
func writeTraceLine(feature, scenario, action, details string) {
	if !StateTracingEnabled() {
		return
	}
	tmpDir := os.Getenv("TMPDIR")
	if tmpDir == "" {
		tmpDir = "/tmp"
	}
	timestamp := time.Now().Format("20060102-150405")
	pid := os.Getpid()
	filename := fmt.Sprintf("bdd-state-trace-%s-%d.log", timestamp, pid)
	filePath := filepath.Join(tmpDir, filename)

	line := fmt.Sprintf("%s | %-15s | %-40s | %-16s | %s\n",
		time.Now().Format("2006-01-02T15:04:05.000000"),
		feature,
		scenario,
		action,
		details,
	)

	file, err := os.OpenFile(filePath, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
	if err != nil {
		return
	}
	defer file.Close()

	if _, err := file.WriteString(line); err != nil {
		return
	}
	file.Sync()
}