package main

import (
	"encoding/json"
	"io"
	"net/http"
)

type JobTraceRequest struct {
	JobId int `json:"job_id"`
}

type JobTraceResponse struct {
	SuccessResponse
	File string `json:"file"`
}

/* jobHandler returns a string that shows the output of a specific job run in a Gitlab pipeline */
func (a *api) jobHandler(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Content-Type", "application/json")
	if r.Method != http.MethodGet {
		w.Header().Set("Access-Control-Allow-Methods", http.MethodGet)
		handleError(w, InvalidRequestError{}, "Expected GET", http.StatusMethodNotAllowed)
		return
	}

	body, err := io.ReadAll(r.Body)
	if err != nil {
		handleError(w, err, "Could not read request body", http.StatusBadRequest)
		return
	}

	defer r.Body.Close()

	var jobTraceRequest JobTraceRequest
	err = json.Unmarshal(body, &jobTraceRequest)
	if err != nil {
		handleError(w, err, "Could not unmarshal data from request body", http.StatusBadRequest)
		return
	}

	reader, res, err := a.client.GetTraceFile(a.projectInfo.ProjectId, jobTraceRequest.JobId)

	if err != nil {
		handleError(w, err, "Could not get trace file for job", http.StatusInternalServerError)
		return
	}

	if res.StatusCode >= 300 {
		handleError(w, GenericError{endpoint: "/job"}, "Could not get trace file for job", res.StatusCode)
		return
	}

	file, err := io.ReadAll(reader)

	if err != nil {
		handleError(w, err, "Could not read job trace file", http.StatusBadRequest)
		return
	}

	response := JobTraceResponse{
		SuccessResponse: SuccessResponse{
			Status:  http.StatusOK,
			Message: "Log file read",
		},
		File: string(file),
	}

	err = json.NewEncoder(w).Encode(response)
	if err != nil {
		handleError(w, err, "Could not encode response", http.StatusInternalServerError)
	}
}