mod build_xml;
mod comments;
mod content_types;
mod doc_props;
mod document;
mod document_rels;
mod elements;
mod font_table;
mod history_id;
mod numberings;
mod rels;
mod settings;
mod styles;
mod xml_docx;

pub(crate) use build_xml::BuildXML;
pub(crate) use history_id::HistoryId;

pub use comments::*;
pub use content_types::*;
pub use doc_props::*;
pub use document::*;
pub use document_rels::*;
pub use elements::*;
pub use font_table::*;
pub use numberings::*;
pub use rels::*;
pub use settings::*;
pub use styles::*;
pub use xml_docx::*;

use serde::Serialize;

#[derive(Debug, Clone, PartialEq, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct Docx {
    pub content_type: ContentTypes,
    pub rels: Rels,
    pub document_rels: DocumentRels,
    pub doc_props: DocProps,
    pub styles: Styles,
    pub document: Document,
    pub comments: Comments,
    pub numberings: Numberings,
    pub settings: Settings,
    pub font_table: FontTable,
}

impl Default for Docx {
    fn default() -> Self {
        let content_type = ContentTypes::new().set_default();
        let rels = Rels::new();
        let doc_props = DocProps::new(CorePropsConfig::new());
        let styles = Styles::new();
        let document = Document::new();
        let document_rels = DocumentRels::new();
        let settings = Settings::new();
        let font_table = FontTable::new();
        let comments = Comments::new();
        let numberings = Numberings::new();
        Docx {
            content_type,
            rels,
            doc_props,
            styles,
            document,
            comments,
            document_rels,
            settings,
            font_table,
            numberings,
        }
    }
}

impl Docx {
    pub fn new() -> Docx {
        Default::default()
    }

    pub fn document(mut self, d: Document) -> Docx {
        self.document = d;
        self
    }

    pub fn add_paragraph(mut self, p: Paragraph) -> Docx {
        if p.has_numbering {
            // If this document has numbering, set numberings.xml to document_rels.
            // This is because numberings.xml without numbering cause an error on word online.
            self.document_rels.has_numberings = true;
        }
        self.document = self.document.add_paragraph(p);
        self
    }

    pub fn add_table(mut self, t: Table) -> Docx {
        if t.has_numbering {
            // If this document has numbering, set numberings.xml to document_rels.
            // This is because numberings.xml without numbering cause an error on word online.
            self.document_rels.has_numberings = true;
        }
        self.document = self.document.add_table(t);
        self
    }

    pub fn add_numbering(mut self, num: Numbering) -> Docx {
        self.numberings = self.numberings.add_numbering(num);
        self
    }

    pub fn created_at(mut self, date: &str) -> Self {
        self.doc_props = self.doc_props.created_at(date);
        self
    }

    pub fn updated_at(mut self, date: &str) -> Self {
        self.doc_props = self.doc_props.updated_at(date);
        self
    }

    pub fn build(&mut self) -> XMLDocx {
        self.update_comments();
        XMLDocx {
            content_type: self.content_type.build(),
            rels: self.rels.build(),
            doc_props: self.doc_props.build(),
            styles: self.styles.build(),
            document: self.document.build(),
            comments: self.comments.build(),
            document_rels: self.document_rels.build(),
            settings: self.settings.build(),
            font_table: self.font_table.build(),
            numberings: self.numberings.build(),
        }
    }

    pub fn json(&mut self) -> String {
        self.update_comments();
        serde_json::to_string(&self).unwrap()
    }

    // Traverse and clone comments from document and add to comments node.
    fn update_comments(&mut self) {
        let mut comments: Vec<Comment> = vec![];
        for child in &self.document.children {
            match child {
                DocumentChild::Paragraph(paragraph) => {
                    for child in &paragraph.children {
                        if let ParagraphChild::CommentStart(c) = child {
                            comments.push(c.comment());
                        }
                    }
                }
                DocumentChild::Table(table) => {
                    for row in &table.rows {
                        for cell in &row.cells {
                            for content in &cell.children {
                                match content {
                                    TableCellContent::Paragraph(paragraph) => {
                                        for child in &paragraph.children {
                                            if let ParagraphChild::CommentStart(c) = child {
                                                comments.push(c.comment());
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
        // If this document has comments, set comments.xml to document_rels.
        // This is because comments.xml without comment cause an error on word online.
        if !comments.is_empty() {
            self.document_rels.has_comments = true;
        }
        self.comments.add_comments(comments);
    }
}