package server

import (
	"fmt"
	"io"
	"net/http"
	"os"

	"gitea.teamortix.com/team-ortix/coverage/db"
)

const coverageSecret = "COVERAGE_SECRET"

var secretEnv = os.Getenv(coverageSecret)

func uploadBranch(w http.ResponseWriter, r *http.Request) {
	upload(w, r, "branch", db.UploadBranchData)
}

func uploadPull(w http.ResponseWriter, r *http.Request) {
	upload(w, r, "pull", db.UploadPullData)
}

func upload(w http.ResponseWriter, r *http.Request,
	uploadType string, uploadFunc func(string, string, string, string, string) error) {
	if r.Method != "POST" {
		return
	}

	err := r.ParseMultipartForm(5 << 20)
	if err != nil {
		http.Error(w, "file too large", http.StatusRequestEntityTooLarge)
		return
	}
	err = r.ParseForm()
	if err != nil {
		http.Error(w, "could not parse form", http.StatusBadRequest)
		return
	}

	secret := r.Form.Get("secret")
	namespace := r.Form.Get("namespace")
	project := r.Form.Get("project")
	uploadValue := r.Form.Get(uploadType)
	coverage := r.Form.Get("coverage")

	if secretEnv != secret && secretEnv != "" {
		http.Error(w, "invalid secret provided", http.StatusUnauthorized)
		return
	}

	if namespace == "" || project == "" || uploadValue == "" || coverage == "" {
		http.Error(w, fmt.Sprintf("request params [namespace project, %s, coverage] must all be present", uploadType),
			http.StatusBadRequest)
		return
	}

	report, _, err := r.FormFile("report")
	if err != nil {
		http.Error(w, "could not parse report parameter", http.StatusBadRequest)
		return
	}
	bytes, err := io.ReadAll(report)
	if err != nil {
		http.Error(w, fmt.Sprintf("could not read file: %v", err), http.StatusBadRequest)
		return
	}

	err = uploadFunc(namespace, project, uploadValue, coverage, string(bytes))
	if err != nil {
		http.Error(w, fmt.Sprintf("could not upload data to database: %v", err), http.StatusInternalServerError)
		return
	}

	fmt.Fprintln(w, "uploaded")
}