package main

import (
	"fmt"
	"html/template"
	"io/ioutil"
	"os"
	"path"
	"sort"
	"strings"

	report "github.com/thebaer/life-report"
)

func main() {
	if len(os.Args) < 2 {
		fmt.Print(`usage: lifereport [directory]
  directory: path to a folder of reports
`)
		return
	}

	dir := os.Args[1]
	files, err := ioutil.ReadDir(dir)
	if err != nil {
		fmt.Print("Unable to read directory: %v\n", err)
		return
	}

	t, err := template.ParseFiles("../report.tmpl")
	if err != nil {
		fmt.Printf("Unable to parse template: %v\n", err)
		return
	}

	var reports []report.Report

	for _, file := range files {
		if file.Name() == "template.json" || !strings.HasSuffix(file.Name(), ".json") {
			continue
		}

		f, err := os.Open(path.Join(dir, file.Name()))
		if err != nil {
			fmt.Fprintf(os.Stdout, "Unable to open file: %v\n", err)
			continue
		}
		if strings.HasPrefix(file.Name(), ".") {
			f.Close()
			continue
		}

		r, err := report.ParseReport(f)
		if err != nil {
			f.Close()
			fmt.Fprintf(os.Stdout, "Unable to parse report %s: %v\n", file.Name(), err)
			continue
		}
		f.Close()

		outName := strings.Replace(file.Name(), ".json", ".html", 1)
		o, err := os.Create(path.Join(dir, outName))
		if err != nil {
			fmt.Fprintf(os.Stdout, "Unable to write report %s: %v\n", outName, err)
			continue
		}

		t.Execute(o, r)
		o.Close()

		r.File = outName
		reports = append(reports, *r)
	}

	// Create index file
	i, err := os.Create(path.Join(dir, "index.html"))
	if err != nil {
		fmt.Fprintf(os.Stdout, "Unable to write index: %v\n", err)
		return
	}
	it, err := template.ParseFiles("../index.tmpl")
	if err != nil {
		fmt.Printf("Unable to parse index template: %v\n", err)
		return
	}
	sort.Sort(sort.Reverse(report.ByNum(reports)))
	it.Execute(i, reports)
	i.Close()
}