/*
Copyright (C) 2017  Cloudbase Solutions SRL
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import React from 'react'
import { Link } from 'react-router-dom'
import { observer } from 'mobx-react'
import styled, { css } from 'styled-components'

import AlertModal from '@src/components/ui/AlertModal'
import Table from '@src/components/ui/Table'
import CopyValue from '@src/components/ui/CopyValue'
import CopyMultilineValue from '@src/components/ui/CopyMultilineValue'
import StatusImage from '@src/components/ui/StatusComponents/StatusImage'
import DropdownLink from '@src/components/ui/Dropdowns/DropdownLink'
import Button from '@src/components/ui/Button'

import type { Project, RoleAssignment, Role } from '@src/@types/Project'
import type { User } from '@src/@types/User'
import { ThemePalette, ThemeProps } from '@src/components/Theme'

const Wrapper = styled.div<any>`
  ${ThemeProps.exactWidth(ThemeProps.contentWidth)}
  margin: 0 auto;
  padding-left: 126px;
`
const Info = styled.div<any>`
  display: flex;
  flex-wrap: wrap;
  margin-top: 32px;
  margin-left: -32px;
`
const Field = styled.div<any>`
  ${ThemeProps.exactWidth('calc(50% - 32px)')}
  margin-bottom: 32px;
  margin-left: 32px;
`
const Value = styled.div<any>``
const Label = styled.div<any>`
  font-size: 10px;
  font-weight: ${ThemeProps.fontWeights.medium};
  color: ${ThemePalette.grayscale[3]};
  text-transform: uppercase;
  margin-bottom: 3px;
`
const LoadingWrapper = styled.div<any>`
  display: flex;
  justify-content: center;
  width: 100%;
  margin: 32px 0 64px 0;
`
const TableStyled = styled(Table)`
  margin-top: 42px;
  margin-bottom: 32px;
`
const Buttons = styled.div<any>`
  margin-top: 64px;
  display: flex;
  justify-content: space-between;
`
const UserColumn = styled.div<any>`
  ${props => (props.disabled ? css`color: ${ThemePalette.grayscale[3]};` : '')}
`
const UserName = styled(Link)<any>`
  ${props => (props.disabled ? css`opacity: 0.7;` : '')}
  color: ${ThemePalette.primary};
  text-decoration: none;
`
const ButtonsColumn = styled.div<any>`
  display: flex;
  flex-direction: column;
  button {
    margin-bottom: 16px;

    &:last-child {
      margin-bottom: 0;
    }
  }
`

type Props = {
  project: Project | null,
  loading: boolean,
  users: User[],
  usersLoading: boolean,
  roleAssignments: RoleAssignment[],
  roles: Role[],
  loggedUserId: string,
  onEnableUser: (user: User) => void,
  onRemoveUser: (user: User) => void,
  onUserRoleChange: (user: User, roleId: string, toggled: boolean) => void,
  onAddMemberClick: () => void,
  onDeleteClick: () => void,
}
type State = {
  showRemoveUserAlert: boolean,
}
const testName = 'pdContent'
@observer
class ProjectDetailsContent extends React.Component<Props, State> {
  state = {
    showRemoveUserAlert: false,
  }

  selectedUser: User | null = null

  handleRemoveUserAction(user: User) {
    this.selectedUser = user
    this.setState({ showRemoveUserAlert: true })
  }

  handleUserAction(user: User, item: { label: string, value: string }) {
    switch (item.value) {
      case 'enable':
        this.props.onEnableUser(user)
        break
      case 'remove':
        this.handleRemoveUserAction(user)
        break
      default:
        break
    }
  }

  handleRemoveUserConfirmation() {
    if (this.selectedUser) {
      this.props.onRemoveUser(this.selectedUser)
    }

    this.setState({ showRemoveUserAlert: false })
  }

  handleCloseRemoveUserConfirmation() {
    this.setState({ showRemoveUserAlert: false })
  }

  renderLoading() {
    return (
      <LoadingWrapper>
        <StatusImage />
      </LoadingWrapper>
    )
  }

  renderButtons() {
    if (this.props.loading) return null

    return (
      <Buttons>
        <ButtonsColumn>
          <Button
            onClick={this.props.onAddMemberClick}
          >Add Member
          </Button>
        </ButtonsColumn>
        <ButtonsColumn>
          <Button
            alert
            hollow
            onClick={() => { this.props.onDeleteClick() }}
          >Delete Project
          </Button>
        </ButtonsColumn>
      </Buttons>
    )
  }

  renderInfo() {
    if (this.props.loading || !this.props.project) {
      return null
    }
    const project = this.props.project

    return (
      <Info>
        <Field>
          <Label>Name</Label>
          {this.renderValue(project.name, 'name')}
        </Field>
        <Field>
          <Label>Description</Label>
          {project.description ? (
            <CopyMultilineValue
              value={project.description}
            />
          ) : <Value>-</Value>}
        </Field>
        <Field>
          <Label>ID</Label>
          {this.renderValue(project.id, 'id')}
        </Field>
        <Field>
          <Label>Enabled</Label>
          <Value>{project.enabled ? 'Yes' : 'No'}</Value>
        </Field>
      </Info>
    )
  }

  renderUsers() {
    if (this.props.usersLoading || this.props.loading) {
      return null
    }
    const rows: React.ReactNode[][] = []
    const actions = (user: User) => [
      {
        label: `${user.enabled ? 'Disable' : 'Enable'} User`,
        value: 'enable',
      }, {
        label: 'Remove',
        value: 'remove',
      },
    ]
    const getUserRoles = (user: RoleAssignment['user']) => {
      const projectId = this.props.project ? this.props.project.id : ''
      const roles = this.props.roleAssignments
        .filter(a => a.scope.project && a.scope.project.id === projectId)
        .filter(a => a.user.id === user.id)
        .map(a => ({ value: a.role.id, label: a.role.name }))
      return roles
    }
    const allRoles = this.props.roles
      .filter(r => r.name !== 'key-manager:service-admin')
      .map(r => ({ value: r.id, label: r.name }))

    this.props.users.forEach(user => {
      const userActions = actions(user)
      const userRoles = getUserRoles(user)
      const columns = [
        <UserName
          data-test-id={`pdContent-users-${user.name}`}
          disabled={!user.enabled}
          to={`/users/${user.id}`}
        >{user.name}
        </UserName>,
        <DropdownLink
          data-test-id={`${testName}-roles-${user.name}`}
          width="214px"
          getLabel={() => (userRoles.length > 0 ? userRoles.map(r => r.label).join(', ') : 'No roles')}
          selectedItems={userRoles.map(r => r.value)}
          listWidth="120px"
          multipleSelection
          items={allRoles}
          labelStyle={{ color: ThemePalette.grayscale[4] }}
          disabled={!user.enabled}
          style={{ opacity: user.enabled ? 1 : 0.7 }}
          onChange={item => {
            this.props.onUserRoleChange(
              user,
              item.value,
              !userRoles.find(i => i.value === item.value),
            )
          }}
        />,
        <UserColumn disabled={!user.enabled}>{user.enabled ? 'Enabled' : 'Disabled'}</UserColumn>,
        <DropdownLink
          data-test-id={`${testName}-actions-${user.name}`}
          noCheckmark
          width="82px"
          items={userActions}
          selectedItem=""
          selectItemLabel="Actions"
          listWidth="120px"
          onChange={item => { this.handleUserAction(user, item) }}
          disabled={user.id === this.props.loggedUserId}
          style={{ opacity: user.id === this.props.loggedUserId ? 0.7 : 1 }}
          itemStyle={item => `color: ${item.value === 'remove' ? ThemePalette.alert : ThemePalette.black};`}
        />,
      ]
      rows.push(columns)
    })

    return (
      <TableStyled
        data-test-id={`${testName}-members`}
        header={['Member', 'Roles', 'Status', '']}
        items={rows}
        noItemsLabel="No members available!"
        columnsStyle={[css`color: ${ThemePalette.black};`]}
      />
    )
  }

  renderValue(value: string, dataTestId: string) {
    return value !== '-' ? (
      <CopyValue
        data-test-id={`${testName}-${dataTestId}`}
        value={value}
        maxWidth="90%"
      />
    ) : <Value>{value}</Value>
  }

  render() {
    return (
      <Wrapper>
        {this.renderInfo()}
        {this.props.loading ? this.renderLoading() : null}
        {this.renderUsers()}
        {!this.props.loading && this.props.usersLoading ? this.renderLoading() : null}
        {this.renderButtons()}
        {this.state.showRemoveUserAlert ? (
          <AlertModal
            isOpen
            title="Remove User?"
            message="Are you sure you want to remove this user from the project?"
            extraMessage=" "
            onConfirmation={() => { this.handleRemoveUserConfirmation() }}
            onRequestClose={() => { this.handleCloseRemoveUserConfirmation() }}
          />
        ) : null}
      </Wrapper>
    )
  }
}

export default ProjectDetailsContent