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/**
 * AltGit - altgit
 *
 * This file is licensed under the Affero General Public License version 3 or
 * later. See the COPYING file.
 *
 * @author Paolo Lulli <kevwe.com>
 * @copyright Paolo Lulli 2026
 */

package main

import (
    "errors"
    "fmt"
    "log"
    "os"
    "repobrowser/internal/config"
    "repobrowser/internal/routes"
    "strings"

    githttp "github.com/AaronO/go-git-http"
    "github.com/gin-gonic/gin"
)

func main() {

    configPath := os.Getenv("HOME") + "/.config/repobrowser.json"

    if _, err := os.Stat(configPath); errors.Is(err, os.ErrNotExist) {
        fmt.Printf("Config file %s doesn't exist\n", configPath)
        os.Exit(1)
    }

    cfg := config.GetClientConfig(configPath)
    //var c = RepositoryBrowserApp{Config: cfg}

    r := gin.Default()
    err := r.SetTrustedProxies([]string{"127.0.0.1"})
    if err != nil {
        return
    }

    // templates and static must exist on the target filesystem
    r.LoadHTMLGlob("templates/*")
    r.Static("/static", "./static")
    //----

    //---------------------------------
    gitHandler := githttp.New(cfg.Root)
    r.Any("/git/*repoPath", func(c *gin.Context) {
        // Strip the /git prefix so go-git-http sees /myrepo.git/...
        c.Request.URL.Path = strings.TrimPrefix(c.Request.URL.Path, "/git")
        c.Request.RequestURI = strings.TrimPrefix(c.Request.RequestURI, "/git")

        gitHandler.ServeHTTP(c.Writer, c.Request)
    })

    //---------------------------------

    r.GET("/", routes.HandleRepoList(cfg))

    repo := r.Group("/:repo")
    {
        repo.GET("/", routes.HandleIndex(cfg))
        repo.GET("/refs", routes.HandleRefs(cfg))
        repo.GET("/log", routes.HandleLog(cfg))
        repo.GET("/commit", routes.HandleCommit(cfg))
        repo.GET("/history", routes.HandleHistory(cfg))
        repo.GET("/view", routes.HandleView(cfg))
        repo.GET("/raw", routes.HandleRaw(cfg))
    }

    var iface string
    if "" == cfg.Interface {
        iface = "0.0.0.0:8080"
    } else {
        iface = cfg.Interface
    }

    fmt.Printf("Starting altgit on: -> http://%s\n", iface)
    if cfg.TlsCertificate == "" || cfg.TlsKeyFile == "" {
        err := r.Run(iface)
        if err != nil {
            log.Fatal("Could not start server", err)
        }
    } else {
        err := r.RunTLS(cfg.Interface, cfg.TlsCertificate, cfg.TlsKeyFile)
        if err != nil {
            log.Fatal("Could not start TLS server", err)
        }
    }
}