# -*- coding: utf-8 -*-
from odoo import tools
from odoo import models, fields

class MrpComponentsReport(models.Model):
    _name = 'mrp.components.report'
    _description = 'MRP Components Report'
    _auto = False

    id = fields.Id(readonly=True)
    date = fields.Date('Date Needed', readonly=True)
    production_id = fields.Many2one('mrp.production', 'Manufacturing Order', readonly=True)
    product_id = fields.Many2one('product.product', 'Parent Product', readonly=True)
    component_id = fields.Many2one('product.product', 'Component', readonly=True)
    workcenter_id = fields.Many2one('mrp.workcenter', 'Work Center', readonly=True)
    product_qty = fields.Float('Quantity Needed', readonly=True)
    product_uom_id = fields.Many2one('uom.uom', 'Unit of Measure', readonly=True)
    state = fields.Selection([
        ('draft', 'Draft'),
        ('confirmed', 'Confirmed'),
        ('progress', 'In Progress'),
        ('to_close', 'To Close'),
        ('done', 'Done'),
        ('cancel', 'Cancelled')], string='MO State', readonly=True)

    def _select(self):
        return """
            SELECT
                sm.id AS id,
                CAST(mp.date_start AS DATE) AS date,
                mp.id AS production_id,
                mp.product_id AS product_id,
                sm.product_id AS component_id,
                COALESCE(mw.id, (SELECT workcenter_id FROM mrp_workorder WHERE production_id = mp.id ORDER BY id ASC LIMIT 1)) AS workcenter_id,
                sm.product_uom_qty AS product_qty,
                sm.product_uom AS product_uom_id,
                mp.state AS state
        """

    def _from(self):
        return """
            FROM stock_move sm
            JOIN mrp_production mp ON sm.raw_material_production_id = mp.id
            LEFT JOIN mrp_bom_line mbl ON sm.bom_line_id = mbl.id
            LEFT JOIN mrp_routing_workcenter mrw ON sm.operation_id = mrw.id
            LEFT JOIN mrp_routing_workcenter mrw_bom ON mbl.operation_id = mrw_bom.id
            LEFT JOIN mrp_workorder mwo ON sm.workorder_id = mwo.id
            LEFT JOIN mrp_workcenter mw ON COALESCE(mrw.workcenter_id, mwo.workcenter_id, mrw_bom.workcenter_id) = mw.id
        """

    def _where(self):
        return """
            WHERE sm.raw_material_production_id IS NOT NULL
            AND sm.state != 'cancel'
            AND mp.state != 'cancel'
        """

    def init(self):
        tools.drop_view_if_exists(self.env.cr, self._table)
        self.env.cr.execute("""CREATE or REPLACE VIEW %s as (
            %s
            %s
            %s
            )""" % (self._table, self._select(), self._from(), self._where()))