import datetime
from urllib import parse

from django.contrib.auth.models import User
from django.contrib.gis.db import models
from django.db import connection
from django.template.defaultfilters import slugify
from django.utils.translation import ugettext_lazy as _

from django_extensions.db.fields import AutoSlugField
from django_countries.fields import CountryField
from multiselectfield import MultiSelectField
from phonenumber_field.modelfields import PhoneNumberField

from . import validators


class CaseStudyDraft(models.Model):
    author = models.ForeignKey(
        User, on_delete=models.CASCADE
    )

    created = models.DateTimeField(auto_now_add=True)

    data = models.TextField()

    def __str__(self):
        return "{0.author.username}, {0.created:%Y-%m-%d %H:%M}".format(self)


class SpatialRefSys(connection.ops.spatial_ref_sys()):
    def __str__(self):
        return self.__unicode__()

    def __unicode__(self):
        return '{0.auth_name}:{0.auth_srid} {0.name}'.format(self)

    class Meta:
        proxy = True
        verbose_name = "spatial reference system"


class CaseStudyQuerySet(models.QuerySet):
    def approved(self):
        return self.filter(
            approved=True
        )


class CaseStudy(models.Model):
    """Model for case studies submitted to the Ojuso Platform"""

    approved = models.BooleanField(default=False)

    # Choice lists for drop-downs
    POSITIVE_NEGATIVE_CHOICES = (
        ('P', _('There is/was an organising process in favour of the project')),
        ('N', _('There is/was an organising process against the project')),
        ('X', _('There is/was no organising process')),
        ('U', _('Unsure/unknown'))
    )

    LAND_OWNERSHIP_CHOICES = (
        ('PRI', _('Private land')),
        ('PUB', _('Public/state land')),
        ('COM', _('Community/communal/customary land')),
        ('CON', _('Contested/in conflict')),
        ('OTH', _('Other')),
    )

    LOCATION_CONTEXT_CHOICES = (
        ('RUR', _('Rural')),
        ('URB', _('Urban')),
        ('MIX', _('Mixed')),
    )

    TYPE_OF_ECOSYSTEM_CHOICES = (
        ('MARINE', _('Marine (e.g. ocean, sea)')),
        ('FRESH', _('Freshwater (e.g. river, lake)')),
        ('FOREST', _('Forest/jungle')),
        ('AGRI', _('Agricultural land')),
        ('GRASS', _('Grassland')),
        ('DESERT', _('Desert (tundra, ice or sand)')),
        ('WETLND', _('Wetland (marsh, mangrove, peat Soil)')),
        ('URBAN', _('Urban'))
    )

    AFFECTED_COMMUNITIES_CHOICES = (
        ('INDIG', _('Indigenous people(s)')),
        ('AFRO', _('Afro-descendants')),
        ('MIG', _('Migrants')),
        ('REF', _('Refugees')),
        ('OTHER', _('Other communities or identities')),
    )

    PROJECT_STATUS_CHOICES = (
        ('INIT', _('Initial/conceptual')),
        ('PROJCD', _('In planning and design')),
        ('FAIL', _('Failed')),
        ('UCONST', _('Under construction')),
        ('EXSTNG', _('In operation')),
        ('DECOMM', _('Undergoing decommissioning')),
        ('END', _('Decommissioned')),
    )

    FINANCIAL_INSTITUTIONS = (
        ('AfDB',   _('African Development Bank (AfDB)')),
        ('BADEA',  _('Arab Bank for Economic Development in Africa (BADEA)')),
        ('ADB',    _('Asian Development Bank (ADB)')),
        ('AIIB',   _('Asian Infrastructure Investment Bank (AIIB)')),
        ('BSTDB',  _('Black Sea Trade and Development Bank (BSTDB)')),
        ('CAF',    _('Corporacion Andina de Fomento / Development Bank of Latin America (CAF)')),
        ('CDB',    _('Caribbean Development Bank (CDB)')),
        ('CABEI',  _('Central American Bank for Economic Integration (CABEI)')),
        ('EADB',   _('East African Development Bank (EADB)')),
        ('ETDB',   _('Economic Cooperation Organization Trade and Development Bank (ETDB)')),
        ('EDB',    _('Eurasian Development Bank (EDB)')),
        ('EBRD',   _('European Bank for Reconstruction and Development (EBRD)')),
        ('EC',     _('European Commission (EC)')),
        ('EIB',    _('European Investment Bank (EIB)')),
        ('IADB',   _('Inter-American Development Bank Group (IDB, IADB)')),
        ('IFAD',   _('International Fund for Agricultural Development (IFAD)')),
        ('IIB',    _('International Investment Bank (IIB)')),
        ('IsDB',   _('Islamic Development Bank (IsDB)')),
        ('FMO',    _('Nederlandse Financieringsmaatschappij voor Ontwikkelingslanden NV (Netherlands Development Finance Company, FMO)')),
        ('NDB',    _('New Development Bank (NDB) (formerly BRICS Development Bank)')),
        ('NDF',    _('The Nordic Development Fund')),
        ('NIB',    _('Nordic Investment Bank (NIB)')),
        ('OFID',   _('OPEC Fund for International Development (OFID)')),
        ('BOAD',   _('West African Development Bank (BOAD)')),
        ('WB',     _('World Bank')),
    )

    SECTOR_CHOICES = (
        ('RN', _('Renewable energy generation project')),
        ('PG', _('Energy networks')),
        ('ST', _('Energy storage facilities')),
        ('SM', _('Mining related to the renewable energy economy')),
        ('MA', _('Manufacturing and/or processing of equipment'))
    )

    GENERATION_TYPE_CHOICES = (
        ('POW', _('Electricity')),
        ('HOT', _('Heat/Cold')),
        ('CHP', _('Combined Heat/Cold and Power (CHP, CCP or CCHP)')),
    )

    GENERATION_TECHNOLOGY_CHOICES = (
        ('BIO', _('Bio-energy')),
        ('GEOT', _('Geothermal electricity')),
        (_('Hydro'), (
            ('uHYD', _('Micro hydro (<100kW)')),
            ('SHYD', _('Small-scale hydro (100kW-1MW)')),
            ('MHYD', _('Medium-scale hydro (1-30MW)')),
            ('LHYD', _('Large-scale hydro (>30MW - often not considered renewable)')),
        )),
        (_('Marine'), (
            ('WAVE', _('Wave')),
            ('TSTR', _('Tidal stream')),
            ('TBAR', _('Tidal barrage/lagoon')),
            ('TOTH', _('Other')),
        )),
        (_('Solar'), (
            ('SSPV', _('Small-scale photovoltaic (<500kW)')),
            ('LSPV', _('Large-scale photovoltaic (>500kW)')),
            ( 'CSP', _('Solar power tower')),
            ('PARA', _('Parabolic trough (open or enclosed)')),
            ('FRES', _('Fresnel reflector')),
            ('STIR', _('Dish Stirling')),
        )),
        (_('Wind'), (
            ('SSWE', _('Small-scale wind (<500kW)')),
            ('LSWE', _('Large-scale wind (>500kW)'))
        )),
        ('OTHR', _('Other'))
    )

    POWER_TECHNOLOGY_CHOICES = (
        ('PT', _('Electrical power transmission/distribution')),
        ('HN', _('Heat networks')),
        ('OT', _('Other')),
    )

    TYPE_OF_EXTRACTION_CHOICES = (
        ('SUR', _('Surface (open pit/open cast/open cut mining)')),
        ('SUB', _('Sub-surface (underground mining)')),
        ('SEA', _('Seabed mining')),
        ('URB', _('Urban mining/recycling'))
    )

    MINERAL_COMMODITY_CHOICES = (
        ('ALU', _('Aluminium (Bauxite)')),
        ('ARS', _('Arsenic')),
        ('BER', _('Beryllium')),
        ('CAD', _('Cadmium')),
        ('CHR', _('Chromium')),
        ('COK', _('Coking coal (for steel)')),
        ('COP', _('Copper')),
        ('GAL', _('Gallium')),
        ('GER', _('Germanium')),
        ('GLD', _('Gold')),
        ('HRE', _(
            'Heavy rare earth elements (gadolinium, terbium, dysprosium, holmium,'
            ' erbium, thulium, ytterbium, lutetium, yttrium, scandium)')),
        ('IRN', _('Iron')),
        ('LRE', _(
            'Light rare earth elements (lanthanum, cerium, praseodymium, neodymium,'
            ' promethium, samarium, europium)')),
        ('LED', _('Lead')),
        ('LIT', _('Lithium')),
        ('MAN', _('Manganese')),
        ('MER', _('Mercury')),
        ('MOL', _('Molybdenum')),
        ('NIC', _('Nickel')),
        ('NIO', _('Niobium')),
        ('PGM', _(
            'Platinum group metals (ruthenium, rhodium, palladium, osmium,'
            ' iridium, and platinum)')),
        ('RHE', _('Rhenium')),
        ('SIL', _('Silicon')),
        ('SIV', _('Silver')),
        ('TAN', _('Tantalum')),
        ('TEL', _('Tellurium')),
        ('THA', _('Thallium')),
        ('TIN', _('Tin')),
        ('TIT', _('Titanium')),
        ('TUN', _('Tungsten')),
        ('VAN', _('Vanadium')),
        ('ZNC', _('Zinc')),
        ('OTR', _('Other'))
    )

    USE_IN_ENERGY_ECONOMY_CHOICES = (
        ('CPV', _('Concentrated solar power (CSP) tower')),
        ('EPT', _('Electrical power transmission/distribution infrastructure')),
        ('ESS', _('Energy storage')),
        ('GGM', _('Geothermal')),
        ('HGM', _('Hydropower')),
        ('HNT', _('Heat networks')),
        ('SPM', _('Solar photovoltaic')),
        ('STM', _('Solar thermal systems')),
        ('WTM', _('Wind power')),
        ('ESS', _("Don't know")),
        ('OTR', _('Other'))
    )

    MANUFACTURING_TYPE_CHOICES = (
        ('GENERATE', _('Manufacturing of renewable energy generation equipment')),
        ('TRANSSTORE', _('Manufacturing of energy transmission or storage equipment')),
        ('RECYCLE', _('Recycling/reusing equipment or raw materials')),
        ('DISPOSAL', _('Disposal of equipment')),
        ('OTHER', _('Other')),
    )

    MANUFACTURING_RELATED_CHOICES = (
        ('PV', _('Solar PV')),
        ('CSP', _('Concentrated solar power (CSP)')),
        ('WIND', _('Wind power')),
        ('HYDRO', _('Hydropower')),
        ('GEO', _('Geothermal')),
        ('TRANSMIT', _('Electrical power transmission infrastructure')),
        ('STORE', _('Energy storage')),
        ('HEAT', _('Heat networks')),
        ('OTHER', _('Other')),
        ('IDK', _('Unknown')),
    )

    MANUFACTURING_FACTORS_CHOICES = (
        ('LAND', _('Land use')),
        ('LABOR', _('Labor rights')),
        ('ENVIRO', _('Environmental factors')),
        ('LIFECYCLE', _('Lifecycle management')),
        ('OWN', _('Ownership')),
        ('OTHER', _('Other(s)')),
    )

    POSITIVE_CASE_TYPE_CHOICES = (
        ('CREP', _('Community project (co-)owned by individuals')),
        ('EACP', _(
            'Community project owned by not-for-profit organizations and/or serving'
            ' the public interest')),
        ('PSEP', _('Public/state (federal, state, municipal) project')),
        ('CORS', _('Circular economy project / Reuse / Recycling')),
    )

    NEGATIVE_CASE_REASONS_CHOICES = (
        ('VOLR', _('Violation of land rights')),
        ('VOHR', _(
            'Violation of fundamental human rights, indigenous rights and/or other'
            ' collective rights')),
        ('EIMP', _(
            'Environmental impacts (severe impacts on ecosystems / violation of laws'
            ' plans or programs of environmental conservation, etc.')),
        ('NCUL', _(
            'Negative cultural impacts (erosion/destruction of bio-cultural heritage,'
            ' impacts on sacred land, etc.)')),
        ('AGGR', _(
            'Aggression/threats to community members opposed to the project,'
            ' collaboration with organized crime, etc.')),
        ('ALAB', _('Abusive labour practices')),
        ('CRUP', _(
            'Corruption and/or irregular permitting or contracting, conflicts of'
            ' interest, etc.')),
    )

    # Dynamically generate a list of choices 40 years prior and after the current year.
    YEAR_CHOICES = [(r, r) for r in
                    range((datetime.datetime.now().year - 40),
                          (datetime.datetime.now().year + 41))]

    ##
    # Meta Fields
    ##

    # User who submitted case study
    author = models.ForeignKey(
            User,
            on_delete=models.SET_NULL,
            blank=True,
            null=True,
            editable=False
    )

    # Date and time of submission
    date_created = models.DateTimeField(auto_now_add=True, null=False)

    # Slug derived from entry_name, used in urls for SEO
    slug = AutoSlugField(populate_from=['entry_name'], editable=False)

    # Language this case study is written in
    language = models.CharField(max_length=16, blank=True)

    # Long or short case study?
    form_type = models.CharField(max_length=16, blank=True)

    ##
    # Territory info
    ##

    location = models.PointField(
        verbose_name=_("Project location")
    )

    shapefiles_label = _(
        "Do you have geographic information files about the territory impacted by"
        " this project?"
    )

    shapefiles_help_text = _(
        "For example, of the limits of the land within which a project is taking"
        " place, or of sites of particular importance. You can upload data in"
        " different formats (ESRI Shapefiles with file extensions like .cpg, .dbf,"
        " .prj, .qpj, .shp, .shx., or GeoPackage gpkg, GeoJSON, KML, GML, etc.)."
        " Write to database@ojuso.org if you need help."
    )

    shapefiles = models.ManyToManyField(
        'files.File',
        related_name='shapefile_for',
        verbose_name=shapefiles_label,
        help_text=shapefiles_help_text,
        blank=True
    )

    coordinate_reference_system = models.ForeignKey(
        SpatialRefSys,
        null=True,
        blank=True,
        default=4326,
        on_delete=models.PROTECT
    )

    name_of_territory_or_area = models.CharField(
        verbose_name=_("Name of territory or area"),
        max_length=512,
        blank=True
    )


    ##
    # First Screen - Basic information
    ##

    # 1.1
    entry_name = models.CharField(
        verbose_name=_("Project name"),
        help_text=_("Please write the local name, followed by any translated name if necessary."),
        max_length=128
    )

    # 1.4
    country = CountryField(
        verbose_name=_("Country"),
        help_text=_("Please select the country of the project.")
    )

    # 1.5.1
    area_of_land = models.IntegerField(
        verbose_name=_("Approximate land area"),
        help_text=_("The area of land covered by the project (km²)")
    )

    # 1.5.2
    land_ownership = models.CharField(
        verbose_name=_("Land ownership/tenure"),
        help_text=_("What type of ownership/tenure does the land fall under?"),
        max_length=3,
        choices=LAND_OWNERSHIP_CHOICES
    )

    # 1.5.3
    land_ownership_details = models.TextField(
        verbose_name=_("Land ownership/tenure details"),
        help_text=_("<p class='text-muted'>Please specify details about land ownership,"
                    " including conflicting claims, unrecognized customary rights, "
                    " conflicts around land lease or purchase contracts, etc."
                    ""
                    "<p class='text-muted'>We understand this is a difficult question, so"
                    " please try to provide <b>just the information you know</b>.</p>"),
        max_length=256,
        blank=True,
    )

    # 1.5.4
    location_context = models.CharField(
        verbose_name=_("Location"),
        help_text=_(
            "Please select the context that is most applicable to this case study."),
        max_length=3,
        choices=LOCATION_CONTEXT_CHOICES
    )

    # 1.5.5
    type_of_ecosystem = MultiSelectField(
        verbose_name=_("Type(s) of ecosystem"),
        max_length=56,
        choices=TYPE_OF_ECOSYSTEM_CHOICES,
        blank=True
    )

    # 1.5.5.3
    describe_ecosystem = models.TextField(
        verbose_name=_("Please describe the ecosystem."),
    )

    affected_communities = MultiSelectField(
        verbose_name=_("Communities or identities present in the project area"),
        max_length=50,
        choices=AFFECTED_COMMUNITIES_CHOICES,
        blank=True
    )


    people_affected_other = models.TextField(
        verbose_name=_("Communities or identities – further detail"),
        help_text=_("Please describe further the communities or identities present in the project area."),
        blank=True
    )

    # 1.6
    project_status = models.CharField(
        verbose_name=_("Status of project"),
        max_length=6,
        choices=PROJECT_STATUS_CHOICES
    )

    # 1.7
    start_year = models.IntegerField(
        verbose_name=_("Construction start year"),
        help_text=_("Please select the year project construction began."
                    "If the project is not yet in construction, select the assumed"
                    " start year as detailed in company information or media."),
        choices=YEAR_CHOICES,
        blank=True,
        null=True
    )

    # 1.8
    completion_year = models.IntegerField(
        verbose_name=_("Operation start year"),
        help_text=_(
            "Please select the year the project's operation and maintenance (O&M) phase"
            " began. If the project is not yet in operation, select the year operation "
            " is expected to begin as detailed in company information or media."),
        choices=YEAR_CHOICES,
        default=None,
        null=True,
        blank=True
    )

    # 1.9
    synopsis = models.TextField(
        verbose_name=_("Project synopsis"),
        help_text=_("Please briefly summarise the project.  (Maximum 500 characters.)"),
        max_length=500
    )

    # 1.10
    full_description = models.TextField(
        verbose_name=_("Full description"),
        help_text=_("Please describe the project in full. Separate paragraphs with two"
                    " new lines. Please add as much detail as you feel is necessary"
                    " here.")
    )

    # 1.11
    project_owners = models.TextField(
        verbose_name=_("Project owners"),
        help_text=_("Please list companies or organisations that own the project."
                    " Write each name in a new line."),
        blank=True
    )

    consultants_contractors = models.TextField(
        verbose_name=_("Consultants and contractors"),
        help_text=_("Please list consultants, planners or organisations that are doing"
                    " the planning, construction, operation or maintenance work relating"
                    " to the project and/or facilities. Separate each with a new line."),
        blank=True
    )

    # 1.12
    shareholders = models.TextField(
        verbose_name=_("Shareholders of the project owners"),
        help_text=_("List the shareholders of the company/companies that own the"
                    " project, if you have this information. Separate with a new line."),
        blank=True
    )

    # 1.13.1
    financial_institutions = MultiSelectField(
        verbose_name=_("Financial institutions"),
        help_text=_("Please select any financial institutions (public or private) that"
                    " have, or are considering extending loans or guarantees to the"
                    " project."),
        choices=FINANCIAL_INSTITUTIONS,
        blank=True
    )

    # 1.13.2
    financial_institutions_other = models.TextField(
        verbose_name=_("Financial institutions – other"),
        help_text=_("Please list any other financial institutions not listed above."
                    " Separate with a new line."),
        blank=True
    )

    # 1.15.1, 1.15.2, 1.15.3
    images = models.ManyToManyField(
        'files.ImageFile',
        related_name='image_for',
        verbose_name=_("Images"),
        blank=True
    )

    # 1.16.1
    video = models.URLField(
        verbose_name=_("Video URL"),
        help_text=_("Copy the URL to a YouTube or Vimeo video that relates to the case study."),
        max_length=80,
        validators=[validators.YouTubeOrVimeoValidator()],
        blank=True
    )

    # 1.16.2
    video_caption = models.CharField(
        verbose_name=_("Video caption"),
        max_length=240,
        blank=True,
    )

    # 1.16.3
    video_credit = models.CharField(
        verbose_name=_("Video credit(s)"),
        max_length=240,
        blank=True,
    )

    # 1.17.1
    media_coverage_mainstream = models.TextField(
        verbose_name=_("Links to media reports"),
        help_text=_("Please provide any links to mainstream media coverage."),
        blank=True,
    )

    # 1.17.2
    media_coverage_independent = models.TextField(
        verbose_name=_("Independent grassroots reports"),
        help_text=_("Please provide any links to grassroots/independent media coverage."),
        blank=True,
    )

    # 1.18.1
    community_voices = models.TextField(
        verbose_name=_("Community Voices"),
        help_text=_(
            "Please add any direct quotes from members of the community that relate"
            " to this project."),
        blank=True,
    )

    # 1.18.2
    direct_comms = models.TextField(
        verbose_name=_("Reports of direct communications"),
        help_text=_(
            "Please add any reports of direct communication between community members"
            " and representatives of developers/companies/investors. If you have files"
            " to upload, you can do this in 'other documents' on the 'uploads' tab."),
        blank=True,
    )

    # 1.18.3
    social_media_links = models.TextField(
        verbose_name=_("Social media links"),
        help_text=_(
            "Please add any links to social media accounts directly relating"
            " to the project."),
        max_length=500,
        blank=True,
    )

    ##
    # Second Screen - Technical and economic analysis
    ##

    sector_of_economy = models.CharField(
        verbose_name=_("Sector of renewable energy economy"),
        max_length=3,
        choices=SECTOR_CHOICES
    )

    energy_details = models.CharField(
        verbose_name=_("Technology type"),
        help_text=_("Please provide more information about the type of technology this case study focuses on."),
        max_length=200,
        blank=True
    )

    ## Energy generation project

    generation_type = models.CharField(
        verbose_name=_('What kind of energy is generated?'),
        max_length=4,
        choices=GENERATION_TYPE_CHOICES,
        blank=True
    )

    generation_technology = models.CharField(
        verbose_name=_("Generation technology"),
        help_text=_("Please select the type of renewable energy generation that most"
                    " applies to this case study."),
        max_length=4,
        choices=GENERATION_TECHNOLOGY_CHOICES,
        blank=True
    )

    # Should be filled in if generation_technology was answered as bio-energy
    biomass_detail = models.CharField(
        verbose_name=_("Bio-energy feedstock"),
        help_text=_("<div class='text-muted'>"
            "<p>Please describe the source of the fuel and how it is processed/used."
            " Please consider:</p>\n"
            "<ul>\n"
            "<li>where the fuel came from e.g. corn, forestry, algae,"
            " commercial food waste, landfill gas, sewage, livestock farm, etc.</li>\n"
            "<li>how it is processed e.g. direct-fired, co-firing with other renewable"
            " input, gasification, bacterial decomposition (anaerobic digestion, AD), "
            " pyrolysis, artificial photosynthesis, fuel cell, etc.</li>\n"
            "</ul>\n"
            "<p>We do not expect users to know this information, but if you do "
            " it may be useful to give a fuller picture.</p>"
        "</div>"),
        max_length=200,
        blank=True
    )

    # 1.14
    energy_customers = models.TextField(
        verbose_name=_("Energy service consumers/off-takers"),
        help_text=_(
            "Please list the customers that buy energy from the project, e.g. the"
            " national grid provider, or private companies. Also mention whether"
            " credits are being sold in the carbon markets. Separate with a new line."
        ),
        blank=True
    )

    # 2.1.2
    total_generation_capacity = models.PositiveIntegerField(
        verbose_name=_("Total generation capacity (kW)"),
        blank=True,
        null=True
    )

    # 2.1.4
    total_investment = models.IntegerField(
        verbose_name=_("Total investment (in USD)"),
        help_text=_(
            "Please enter the approximate total investment for the project in"
            " United State Dollars (USD)."),
        blank=True,
        null=True
    )

    # 2.2 - Power Grids / Energy Storage
    # 2.2.1
    power_technology = models.CharField(
        verbose_name=_("Power technology"),
        max_length=2,
        choices=POWER_TECHNOLOGY_CHOICES,
        blank=True
    )

    # 2.2.1.4
    power_technology_other = models.CharField(
        verbose_name=_("Further information about power technology"),
        max_length=128,
        blank=True
    )

    energy_storage_capacity = models.DecimalField(
        verbose_name=_("Total storage capacity (kWh)"),
        max_digits=20,
        decimal_places=3,
        blank=True,
        null=True,
    )

    energy_transmission_capacity = models.DecimalField(
        verbose_name=_("Total transmission or distribution capacity (kW)"),
        max_digits=20,
        decimal_places=3,
        blank=True,
        null=True,
    )

    # TODO: Auto-completion based on previous entries so we can query case-studies with the same answer.
    contractor_or_supplier_of_technology = models.TextField(
        verbose_name=_('Supplier of technology'),
        help_text=_("Please list companies that supply the energy generation equipment"
                    " - e.g. Siemens Gamesa, GE, Alstom, Vestas, Hanwha Q CELLS,"
                    " Mitsubishi, First Solar, Jinko Solar, Trina Solar,"
                    " Suzlon Energy, Statkraft, Shanghai Electric,"
                    " Ballard Power Systems, Panasonic, etc."),
        blank=True,
    )

    # 2.2.5
    additional_technical_details = models.TextField(
        verbose_name=_("Additional technical or economic details"),
        help_text=_(
            "Please add any additional details that may help to explain the technical"
            " and economic aspects of this case study."),
        blank=True
    )

    ##
    # Mining
    ##

    minerals_or_commodities = models.CharField(
        verbose_name=_("Primary mineral mined"),
        help_text=_("What mineral commodity is primarily mined here?"),
        max_length=3,
        choices=MINERAL_COMMODITY_CHOICES,
        blank=True
    )

    minerals_or_commodities_other = models.TextField(
        verbose_name=_("Other mineral commodities"),
        help_text=_(
            "Please enter any mineral commodities not in the list."
            " Separate each with a new line."),
        blank=True
    )

    use_in_energy_economy = MultiSelectField(
        verbose_name=_("Potential use in renewable energy economy"),
        max_length=128,
        choices=USE_IN_ENERGY_ECONOMY_CHOICES,
        blank=True
    )

    use_in_energy_economy_other = models.CharField(
        verbose_name=_('Other'),
        max_length=128,
        blank=True
    )

    project_life_span = models.CharField(
        verbose_name=_("Project life span"),
        help_text=_("e.g. 12 years of production, 15 years overall"),
        max_length=200,
        blank=True
    )

    size_of_concessions = models.CharField(
        verbose_name=_("Size of concessions (land/marine area)"),
        help_text=_(
            "Please describe the size of concession(s) granted to company/companies"
            " (e.g. 'one concession of 2,300 hectares (23km²)')"),
        max_length=200,
        blank=True
    )

    projected_production_of_commodities = models.CharField(
        verbose_name=_("Estimated production of key commodities"),
        help_text=_(
            'Please describe the projected production of commodities per annum and'
            ' overall.<br>\n'
            'For example, "40 million tonnes of iron ore per year",'
            ' "200 million tonnes over 5 year life of mine"."'),
        max_length=256,
        blank=True
    )

    type_of_extraction = models.CharField(
        verbose_name=_("Type of extraction"),
        max_length=3,
        choices=TYPE_OF_EXTRACTION_CHOICES,
        blank=True
    )

    associated_infrastructure = models.CharField(
        verbose_name=_("Associated infrastructure in the locality"),
        help_text=_("Please list any associated infrastructure in the locality"
                    " (e.g. tailings dams / mine waste storage and treatment facilities;"
                    " ore processing facilities; smelting facilities;"
                    " hydroelectric dams / energy infrastructure;"
                    " transport infrastructure e.g. roads or rail)."),
        max_length=256,
        blank=True
    )

    ## Manufacturing

    manufacturing_type = models.CharField(
        verbose_name=_("Which of the following options best describes this case?"),
        max_length=16,
        choices=MANUFACTURING_TYPE_CHOICES,
        blank=True
    )

    manufacturing_description = models.TextField(
        verbose_name=_("Description"),
        help_text=_(
            "Please briefly describe manufacturing process and components/outputs."
            " (less than 500 characters)."),
        max_length=500,
        blank=True
    )

    manufacturing_related_tech = MultiSelectField(
        verbose_name=_("What technology is this case related to?"),
        max_length=128,
        choices=MANUFACTURING_RELATED_CHOICES,
        blank=True
    )

    manufacturing_factors = MultiSelectField(
        verbose_name=_(
            "Please choose the factors that make this case remarkable, "
            "in a positive or negative way."),
        max_length=128,
        choices=MANUFACTURING_FACTORS_CHOICES,
        blank=True
    )

    manufacturing_factors_description = models.TextField(
        verbose_name=_("Please describe these factors."),
        blank=True
    )

    manufacturing_ownership = models.TextField(
        verbose_name=_("Describe the ownership structure of the project and its relation with the local community"),
        blank=True
    )


    ##
    # Socio-economic analysis
    ##

    positive_or_negative = models.CharField(
        verbose_name=_("What is the relationship of local community organization(s) to this project?"),
        max_length=1,
        choices=POSITIVE_NEGATIVE_CHOICES
    )

    positive_case_type = MultiSelectField(
        verbose_name=_('What kind of case is this entry about?'),
        choices=POSITIVE_CASE_TYPE_CHOICES,
        max_length=32,
        blank=True,
    )

    negative_case_reasons = MultiSelectField(
        verbose_name=("What kind of case is this entry about?"),
        choices=NEGATIVE_CASE_REASONS_CHOICES,
        blank=True
    )

    socioeconomic_benefits = models.TextField(
        verbose_name=_('Socio-economic impacts'),
        blank=True
    )

    negative_socioenvironmental_impacts = models.TextField(
        verbose_name=_("Describe the socio-environmental impacts (positive and negative):"),
        help_text=_(
            "Please provide a detailed description of the socio-environmental impacts"
            " (all relevant details, such as type of ecosystem, presence of any"
            " existing reserve in the area, biodiversity impacts, new protection of"
            " lands/waters, total geographic footprint of the project,"
            " tenure system affected in the case of land grabs, etc.)."),
        blank=True
    )

    isolated_or_widespread = models.TextField(
        verbose_name=_("Is the project part of developments which are causing a cumulative effect?"),
        help_text=_(
            "Is this an isolated project or are there similar projects in the same"
            " geographic area? If so, can you please describe them? Is there an"
            " analysis of cumulative or synergetic effects?"),
        blank=True
    )

    key_actors_involved = models.TextField(
        verbose_name=_('Key actors involved (individual/organisational)'),
        blank=True
    )

    project_status_detail = models.TextField(
        verbose_name=_('Current status of the case'),
        help_text=_("Please describe the current situation and likely future scenarios."),
        blank=True
    )

    obstacles_and_hindrances = models.TextField(
        verbose_name=_('Current status of the organizing process around this case'),
        help_text=_('Please describe the status of the organizing process, including the obstacles and hindrances faced.'),
        max_length=512,
        blank=True
    )

    identified_partnerships = models.CharField(
        verbose_name=_('Identified partnerships'),
        help_text=_('Are you, or the organizing process that you represent, looking for partnerships,'
                    ' or have any clearly identified need? If so, please describe and we will try'
                    ' to connect you to appropriate partners.'),
        max_length=256,
        blank=True
    )

    # 3.2.1.9
    negative_case_reasons_other = models.CharField(
        verbose_name=_("Other reason for negative case"),
        help_text=_("For negative impacts you need to focus on substantive impacts on vulnerable groups."),
        max_length=512,
        blank=True
    )

    # 3.2.4.1
    when_did_organising_start = models.CharField(
        verbose_name=_("When did local organising efforts begin?"),
        help_text=_(
            "Before the project started? During project implementation?"
            " After project implementation? Please describe in your own words."),
        max_length=512,
        blank=True
    )

    # 3.2.4.2
    who_has_been_involved = models.TextField(
        verbose_name=_("Which communities, groups and organisations have been involved?"),
        blank=True
    )

    # 3.2.4.3
    participation_mechanisms = models.TextField(
        verbose_name=_("What mechanisms of participation have been used?"),
        help_text=_("e.g. direct action, local referendums, legal cases,"
                    " letters or petitions, etc."),
        blank=True
    )

    # 3.2.7
    wants_conversation_with_ojuso = models.BooleanField(
        verbose_name=_(
            "Would you like to have a conversation with the <b>ojuso</b> team?"),
        help_text=_(
            "This would be a conversation about challenging or engaging related"
            " developers, companies and investors."),
        default=False
    )


    ##
    # Contact details
    ##

    contact_email = models.EmailField(
        verbose_name=_('Email address'),
        blank=True
    )

    contact_phone = PhoneNumberField(
        verbose_name=_('Phone number'),
        help_text=_('Please include the international prefix, beginning with "+".'),
        blank=True
    )

    contact_website = models.URLField(
        verbose_name=_('Website'),
        blank=True
    )

    contact_twitter = models.CharField(
        verbose_name=_('Twitter username'),
        max_length=50,
        blank=True
    )

    contact_facebook = models.URLField(
        verbose_name=_('Facebook page'),
        blank=True
    )

    contact_other = models.TextField(
        verbose_name=_('Other contact details'),
        blank=True
    )


    ##
    # Uploads
    ##

    # 4.1
    official_project_documents = models.ManyToManyField(
        'files.File',
        related_name='official_project_document_for',
        verbose_name=_("Official project documents"),
        help_text=_("Please attach any legal or official documents that relate to the project."),
        blank=True,
    )

    # 4.2
    other_documents = models.ManyToManyField(
        'files.File',
        related_name='other_document_for',
        verbose_name=_("Other documents"),
        help_text=_("Please attach any other documents that relate to the project."),
        blank=True,
    )

    # 4.4
    shown_on_other_platforms = models.BooleanField(
        verbose_name=_("Is this case study shown on other platforms?"),
        default=True
    )

    # 4.4.1
    shown_on_other_platforms_detail = models.TextField(
        verbose_name=_("Shown on other platforms - Detail"),
        help_text=_("Please provide links to other places the case study appears."),
        blank=True
    )

    objects = CaseStudyQuerySet.as_manager()

    def __str__(self):
        """The String representation of the case study. (Entry name with country name.)"""
        return "%s in %s" % (self.entry_name, self.country.name)

    def save(self, *args, **kwargs):
        """
        Override the save method to create a slug when the model is created.
        Slug is only created and never modified as we are basing our URLs on it and
        don't want it to change - ever.
        """
        if not self.pk:
            # Newly created object, so set slug
            self.slug = slugify(self.entry_name)

        super(CaseStudy, self).save(*args, **kwargs)

    def is_video_youtube(self):
        return self.video.count("youtube.com") > 0

    def get_youtube_id(self):
        """Gets the 11 character YouTube video ID from the video field."""
        return parse.parse_qs(parse.urlparse(self.video).query)["v"][0]

    def is_video_vimeo(self):
        return self.video.count("vimeo.com") > 0

    def get_vimeo_id(self):
        """Gets the 11 number video ID from the video field."""
        return parse.urlparse(self.video).path

    class Meta:
        verbose_name_plural = 'case studies'


class PointOfInterestQuerySet(models.QuerySet):
    def approved(self):
        return self.filter(
            approved=True
        )


class PointOfInterest(models.Model):
    class Meta:
        verbose_name_plural = 'points of interest'

    def __str__(self):
        return self.title

    objects = PointOfInterestQuerySet.as_manager()

    author = models.ForeignKey(
        User,
        models.SET_NULL,
        blank=True,
        null=True,
        editable=False
    )

    date_created = models.DateTimeField(auto_now_add=True, null=False)

    slug = AutoSlugField(populate_from=['title'], editable=False)

    approved = models.BooleanField(default=False)

    title = models.CharField(max_length=128)
    location = models.PointField()
    synopsis = models.TextField()
    link = models.URLField()