[ADD] hr_fleet: Add claim report and cars history per employee

Purpose
=======

When an employee leaves the company, the fleet manager must ask to the insurance company
a claim report for this employee. But in oddo, there is no easy way to have an history
of the drivers.

Specification
=============

1/ On the employee form, add a stat button: "x cars". The button shouldn't be displayed if the count = 0.
   Make a bridge (auto_install: True in the manifest) depending on hr (hr.employee) and fleet (fleet.vehicle.assignation.log)
   - Add a field employee_cars_count (computed) to count the amount of cars the employee drove.
   - Add an method action_open_employee_cars, that return an action (ir.actions.act_window)
     that open on the fleet.vehicle kanban filtered on cars the employee had driven.
2/ In this bridge module, add on the fleet.vehicle.assignation.logs a button (like in expense) to upload
   documents about the car for a particular employee (PV, rapport d'assurance, blabla). On the employee
   form view, add an action button (with groups fleet_manager) to print all the related documents
   (all the attachements on the fleet.vehicle.assignation.logs for the employee).

closes odoo/odoo#28077

1 files changed, 72 insertions, 0 deletions

diff --git a/addons/hr_fleet/controllers/main.py b/addons/hr_fleet/controllers/main.py
new file mode 100644
index 00000000000..0a27163c3cd
--- /dev/null
+++ b/addons/hr_fleet/controllers/main.py
@@ -0,0 +1,72 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import base64
+import io
+
+from odoo import _
+from odoo.http import request, route, Controller
+
+from PyPDF2 import  PdfFileReader, PdfFileWriter
+from reportlab.pdfgen import canvas
+
+
+class HrFleet(Controller):
+    
+    @route(["/fleet/print_claim_report/<int:employee_id>"], type='http', auth='user')
+    def get_claim_report_user(self, employee_id, **post):
+        if not request.env.user.has_group('fleet.fleet_group_manager'):
+            return request.not_found()
+
+        employee = request.env['hr.employee'].search([('id', '=', employee_id)], limit=1)
+        partner_id = employee.user_id.partner_id.id
+        if not employee or not partner_id:
+            return request.not_found()
+
+        car_assignation_logs = request.env['fleet.vehicle.assignation.log'].search([('driver_id', '=', partner_id)])
+        doc_list = request.env['ir.attachment'].search([
+            ('res_model', '=', 'fleet.vehicle.assignation.log'),
+            ('res_id', 'in', car_assignation_logs.ids)], order='create_date')
+
+        writer = PdfFileWriter()
+
+        font = "Helvetica"
+        normal_font_size = 14
+
+        for document in doc_list:
+            car_line_doc = request.env['fleet.vehicle.assignation.log'].browse(document.res_id)
+            try:
+                reader = PdfFileReader(io.BytesIO(base64.b64decode(document.datas)), strict=False, overwriteWarnings=False)
+            except Exception:
+                continue
+
+            width = float(reader.getPage(0).mediaBox.getUpperRight_x())
+            height = float(reader.getPage(0).mediaBox.getUpperRight_y())
+
+            header = io.BytesIO()
+            can = canvas.Canvas(header)
+            can.setFont(font, normal_font_size)
+            can.setFillColorRGB(1, 0, 0)
+
+            car_name = car_line_doc.vehicle_id.display_name
+            date_start = car_line_doc.date_start
+            date_end = car_line_doc.date_end or '...'
+
+            text_to_print = _("%s (driven from: %s to %s)") % (car_name, date_start, date_end)
+            can.drawCentredString(width / 2, height - normal_font_size, text_to_print)
+            can.save()
+            header_pdf = PdfFileReader(header, overwriteWarnings=False)
+
+            for page_number in range(0, reader.getNumPages()):
+                page = reader.getPage(page_number)
+                page.mergePage(header_pdf.getPage(0))
+                writer.addPage(page)
+
+        _buffer = io.BytesIO()
+        writer.write(_buffer)
+        merged_pdf = _buffer.getvalue()
+        _buffer.close()
+
+        pdfhttpheaders = [('Content-Type', 'application/pdf'), ('Content-Length', len(merged_pdf))]
+
+        return request.make_response(merged_pdf, headers=pdfhttpheaders)