From 32daf0235192c42ef9a34baa82c8223c52f61cc8 Mon Sep 17 00:00:00 2001
From: Patrick Lipka <patrick.lipka@emea.nec.com>
Date: Wed, 8 Dec 2021 22:30:44 +0100
Subject: [PATCH] Added saving to binary, implementation of loading started

---
 src/project.cpp | 69 ++++++++++++++++++++++++++++++++++++++++---------
 src/project.h   |  2 ++
 src/tt.cpp      |  9 +++++--
 3 files changed, 66 insertions(+), 14 deletions(-)

diff --git a/src/project.cpp b/src/project.cpp
index 4495abb..d1c3909 100644
--- a/src/project.cpp
+++ b/src/project.cpp
@@ -1,5 +1,7 @@
 #include <vector>
 #include <algorithm>
+#include <fstream>
+#include <iostream>
 #include "project.h"
 
 Project::Project(std::string name){
@@ -9,25 +11,68 @@ Project::Project(std::string name){
 }
 
 void Project::add_task(Task task){
-    Project::tasks.push_back(task);
-    Project::active_task = Project::num_tasks;
-    Project::num_tasks++;
+    tasks.push_back(task);
+    active_task = num_tasks;
+    num_tasks++;
 }
 
 void Project::remove_task(int id){
-    Project::tasks.erase(tasks.begin()+id);
-    Project::active_task = std::max(id-1,0);
-    Project::num_tasks--;
+    tasks.erase(tasks.begin()+id);
+    active_task = std::max(id-1,0);
+    num_tasks--;
 }
 
 void ProjectList::add_project(Project proj){
-    ProjectList::projects.push_back(proj);
-    ProjectList::active_project = ProjectList::num_projects;
-    ProjectList::num_projects++;
+    projects.push_back(proj);
+    active_project = num_projects;
+    num_projects++;
 }
 
 void ProjectList::remove_project(int id){
-    ProjectList::projects.erase(projects.begin()+id);
-    ProjectList::active_project = std::max(id-1,0);
-    ProjectList::num_projects--;
+    projects.erase(projects.begin()+id);
+    active_project = std::max(id-1,0);
+    num_projects--;
+}
+
+void ProjectList::save(std::string file_name){
+    std::ofstream of(file_name, std::ios::out | std::ios::binary);
+    if (!of){
+        std::cout << "Could not open file " << file_name << " for writing!" << std::endl;
+        exit(1);
+    }
+    std::cout << num_projects << " " << num_projects << std::endl;
+    of.write((char*) &num_projects, sizeof(int));
+    of.write((char*) &active_project, sizeof(int));
+    for (int i=0; i<num_projects; i++){
+        int len = projects[i].name.length();
+        of.write((char*) &len, sizeof(int));
+        of.write((char*) &(projects[i].name),ProjectList::projects[i].name.length());
+        of.write((char*) &(projects[i].num_tasks), sizeof(int));
+        of.write((char*) &(projects[i].active_task), sizeof(int));
+        for (int j=0; j<projects[i].num_tasks; j++){
+            of.write((char*) &(projects[i].tasks[j].name), projects[i].tasks[j].name.length());
+            of.write((char*) &(projects[i].tasks[j].work_time), sizeof(int));
+        }
+    }
+    of.close();
+}
+
+void ProjectList::load(std::string file_name){
+    std::ifstream inf(file_name, std::ios::in | std::ios::binary);
+    if (!inf){
+        std::cout << "Could not open file " << file_name << " for reading!" << std::endl;
+        exit(1);
+    }
+    
+    inf.read((char*) &num_projects,sizeof(int));
+    std::cout << "Num projects read:" << num_projects << std::endl;
+    inf.read((char*) &active_project, sizeof(int));
+    for (int i=0; i<num_projects;i++){
+        int tmp_len;
+        std::string tmp_name;
+        inf.read((char*) &tmp_len, sizeof(int));
+        std::cout << "tmp_len read: "<< tmp_len <<std::endl;
+        inf.read((char*) &tmp_name, tmp_len);
+        std::cout << "name read: " << tmp_name << std::endl;
+    }
 }
diff --git a/src/project.h b/src/project.h
index 04bcb8f..f44a317 100644
--- a/src/project.h
+++ b/src/project.h
@@ -23,6 +23,8 @@ class ProjectList{
         void add_project(Project proj);
         void remove_project(int id);
         int active_project;
+        void save(std::string file_name);
+        void load(std::string file_name);
 };
 
 #endif
diff --git a/src/tt.cpp b/src/tt.cpp
index 5eff5d5..0ce68c1 100644
--- a/src/tt.cpp
+++ b/src/tt.cpp
@@ -20,8 +20,13 @@ int main(){
     ProjectList proj_list;
     proj_list.add_project(proj);
     std::cout << "Project List no of projects: " << proj_list.num_projects << " Name of active proj: " << proj_list.projects[proj_list.active_project].name << std::endl;
+
+    std::cout << "Write Project List to file" << std::endl;
+    proj_list.save("test.bin");
     
-    proj_list.remove_project(0);
-    std::cout << "Project List no of projects: " << proj_list.num_projects << std::endl;
+    std::cout << "Read Project List from file" << std::endl;
+    ProjectList list2;
+    list2.load("test.bin");
+
     return 0;
 }