use vobject::vcard::VcardBuilder;
use chrono::Local;
use uuid::Uuid;
use vobject::Vcard;
use crate::model::property_groups::address::Address;
use crate::model::property_groups::communication::Communication;
use crate::model::property_groups::name::Name;
use crate::model::property_groups::organizational::Organizational;
use crate::model::property_groups::other_identification::OtherIdentification;
use crate::model::property_groups::telephone::Telephone;
use vobject::error::Result as VResult;
use crate::model::VCardPropertyInputGroupObject;
use boolinator::Boolinator;
use vobject::parameters;
use genpdf::Element as _;
use genpdf::{elements, fonts, style};

/// Type that represents the data structure of a vcard.
#[derive(Clone, Debug)]
pub struct VCardData {
    pub names: Vec<Name>,
    pub addresses: Vec<Address>,
    pub telephones: Vec<Telephone>,
    pub communications: Vec<Communication>,
    pub other_identifications: Vec<OtherIdentification>,
    pub organizationals: Vec<Organizational>,
}

macro_rules! make_vec_adder_fn {
    ( fn $fnname:ident $property:ident => $($arg_name:ident : $arg_type:ty),* ) => {
        pub fn $fnname(&mut self, $( $arg_name : $arg_type ),*) {
            $(self.$property.push($arg_name);)*
        }
    };
}

impl VCardData {
    pub fn new() -> Self {
        Self {
            names: Vec::new(),
            addresses: Vec::new(),
            telephones: Vec::new(),
            communications: Vec::new(),
            other_identifications: Vec::new(),
            organizationals: Vec::new(),
        }
    }

    make_vec_adder_fn!( fn add_name names => name: Name );
    make_vec_adder_fn!( fn add_address addresses => address: Address );
    make_vec_adder_fn!( fn add_telephone telephones => telephone: Telephone );
    make_vec_adder_fn!( fn add_communication communications => communication: Communication );
    make_vec_adder_fn!( fn add_other_identification other_identifications => other_identification: OtherIdentification );
    make_vec_adder_fn!( fn add_organizational organizationals => organizational: Organizational );

    pub fn build_vcard(&self) -> VResult<Vcard> {

        let vcard_data = self.clone();
        let mut builder = VcardBuilder::new();

        for name in vcard_data.names {
            if !name.is_empty() {
                builder = builder.with_fullname(name.generate_fn()).with_name(
                    parameters!(),
                    (!name.last_name.is_empty()).as_some(name.last_name.clone()),
                    (!name.first_name.is_empty()).as_some(name.first_name.clone()),
                    (!name.middle_name.is_empty()).as_some(name.middle_name.clone()),
                    (!name.prefix.is_empty()).as_some(name.prefix.clone()),
                    (!name.suffix.is_empty()).as_some(name.suffix.clone()),
                );
            }
        }

        for address in vcard_data.addresses {
            if !address.is_empty() {
                let mut types = String::new();
                if address.work {
                    types.push_str("WORK");
                }
                if address.home {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("HOME")
                }

                let params = if types.is_empty() {
                    parameters!()
                } else {
                    parameters!("TYPE" => types)
                };

                builder = builder.with_adr(
                    params,
                    (!address.post_office_box.is_empty())
                        .as_some(address.post_office_box.clone()),
                    (!address.extension.is_empty()).as_some(address.extension.clone()),
                    (!address.street.is_empty()).as_some(address.street.clone()),
                    (!address.locality.is_empty()).as_some(address.locality.clone()),
                    (!address.region.is_empty()).as_some(address.region.clone()),
                    (!address.code.is_empty()).as_some(address.code.clone()),
                    (!address.country.is_empty()).as_some(address.country.clone()),
                );
            }
        }

        for telephone in vcard_data.telephones {
            if !telephone.is_empty() {
                let mut types = String::new();
                if telephone.work {
                    types.push_str("WORK");
                }
                if telephone.home {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("HOME")
                }
                if telephone.text {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("TEXT")
                }
                if telephone.voice {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("VOICE")
                }
                if telephone.fax {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("FAX")
                }
                if telephone.cell {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("CELL")
                }
                if telephone.video {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("VIDEO")
                }
                if telephone.pager {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("PAGER")
                }
                if telephone.text_phone {
                    if !types.is_empty() {
                        types.push(',');
                    }
                    types.push_str("TEXTPHONE")
                }

                let params = if types.is_empty() {
                    parameters!()
                } else {
                    parameters!("TYPE" => types)
                };

                builder = builder.with_tel(params, telephone.number.clone());
            }
        }

        for communication in vcard_data.communications {
            if !communication.email_address.is_empty() {
                builder = builder.with_email(communication.email_address.clone());
            }
            if !communication.impp.is_empty() {
                builder = builder.with_impp(communication.impp.clone());
            }
        }

        for other_identification in vcard_data.other_identifications {
            if !other_identification.nickname.is_empty() {
                builder =
                    builder.with_nickname(parameters!(), other_identification.nickname);
            }

            match other_identification.photo {
                Some(file) => builder = builder.with_photo(parameters!(), file.content),
                None => (),
            };

            if !other_identification.anniversary.is_empty() {
                builder = builder.with_anniversary(other_identification.anniversary);
            }

            if !other_identification.birthday.is_empty() {
                builder = builder.with_bday(parameters!(), other_identification.birthday);
            }

            if !other_identification.gender.is_empty() {
                builder = builder.with_gender(parameters!(), other_identification.gender);
            }
        }

        for organizational in vcard_data.organizationals {
            if !organizational.org.is_empty() {
                builder = builder.with_org(vec![organizational.org]);
            }

            match organizational.logo {
                Some(file) => builder = builder.with_logo(file.content),
                None => (),
            };

            if !organizational.title.is_empty() {
                builder = builder.with_title(organizational.title);
            }

            if !organizational.role.is_empty() {
                builder = builder.with_role(organizational.role);
            }

            if !organizational.member.is_empty() {
                builder = builder.with_member(organizational.member);
            }

            if !organizational.related.is_empty() {
                builder = builder.with_related(organizational.related);
            }
        }

        let uid = format!("urn:uuid:{}", Uuid::new_v4());

        let rev = Local::now().to_string();

        builder
            .with_version("4.0".to_string())
            .with_rev(rev)
            .with_uid(uid)
            .build()
    }

    pub fn generate_pdf(&self) -> Result<String, ()> {
        let regular_bytes =
            include_bytes!("/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf");
        let regular_font_data = fonts::FontData::new(
            regular_bytes.to_vec(),
            Some(printpdf::BuiltinFont::Helvetica),
        )
        .expect("font data should be correct");

        let bold_bytes = include_bytes!("/usr/share/fonts/truetype/liberation/LiberationSans-Bold.ttf");
        let bold_font_data = fonts::FontData::new(
            bold_bytes.to_vec(),
            Some(printpdf::BuiltinFont::HelveticaBold),
        )
        .expect("font data should be correct");

        let italic_bytes = include_bytes!("/usr/share/fonts/truetype/liberation/LiberationSans-Italic.ttf");
        let italic_font_data = fonts::FontData::new(
            italic_bytes.to_vec(),
            Some(printpdf::BuiltinFont::HelveticaOblique),
        )
        .expect("font data should be correct");

        let bold_italic_bytes =
            include_bytes!("/usr/share/fonts/truetype/liberation/LiberationSans-BoldItalic.ttf");
        let bold_italic_font_data = fonts::FontData::new(
            bold_italic_bytes.to_vec(),
            Some(printpdf::BuiltinFont::HelveticaBoldOblique),
        )
        .expect("font data should be correct");

        let font_family = fonts::FontFamily {
            regular: regular_font_data,
            bold: bold_font_data,
            italic: italic_font_data,
            bold_italic: bold_italic_font_data,
        };

        let mut doc = genpdf::Document::new(font_family);

        doc.set_title("wasm-card test");
        doc.set_minimal_conformance();

        let mut decorator = genpdf::SimplePageDecorator::new();
        decorator.set_margins(10);
        doc.set_page_decorator(decorator);

        doc.set_line_spacing(1.25);

        doc.push(
            elements::Paragraph::new("genpdf Demo Document")
                .aligned(elements::Alignment::Center)
                .styled(style::Style::new().bold().with_font_size(20)),
        );
        
        let mut table = elements::TableLayout::new(vec![1,1]);
        table.set_cell_decorator(
            elements::FrameCellDecorator::new(false, false, false)
        );
        for _i in 0..4 {
            table
                .row()
                .element(self.create_card_element())
                .element(self.create_card_element())
                .push()
                .expect("invalid table row");
        }

        doc.push(table);

        // TODO fill doc with real data

        let mut buf: Vec<u8> = Vec::new();
        match doc.render(&mut buf) {
            Ok(_) => Ok(match String::from_utf8(buf) {
                Ok(s) => s,
                Err(_) => return Err(()),
            }),
            Err(_) => Err(()),
        }
    }

    fn create_card_element(&self) -> impl genpdf::Element {
        let mut layout = elements::LinearLayout::vertical();

        if let Some(name) = self.names.get(0) {
            layout.push(elements::Text::new(style::StyledString::new(
                    name.generate_fn(), 
                    style::Effect::Bold
            )));
        }
        if let Some(communication) = self.communications.get(0) {
            layout.push(elements::Text::new(&communication.email_address));
        }
        if let Some(address) = self.addresses.get(0) {
            layout.push(elements::Text::new(&address.street));
            layout.push(elements::Text::new(
                format!("{} {} {}", address.code, address.locality, address.extension)
            ));
            layout.push(elements::Text::new(
                format!("{} {}", address.region, address.country)
            ));
        }
        for telephone in &self.telephones {
            layout.push(elements::Text::new(&telephone.number));
        }

        elements::FramedElement::new(layout)
    }
}