csvpp 0.6.0

//! # `GoogleSheetsCell`
//!
//! A wrapper around `Cell` to make it more compatible with the Google Sheets API.  An important
//! design principal here is that we only send the changes that the user set - we should not be
//! sending a bunch of default values and prefer to return None instead.  In other words the API
//! payloads should reflect only the things the user specified on the cell.
//!
use crate::{
    BorderSide, BorderStyle, Cell, DataValidation, HorizontalAlign, NumberFormat, Rgb, TextFormat,
    VerticalAlign,
};
use google_sheets4::api;

pub(super) struct GoogleSheetsCell<'a>(pub(super) &'a Cell);

macro_rules! build_boolean_condition {
    ($gs_name:literal, $conditional_value_attr:ident $(, $dv:ident)*) => {
        api::BooleanCondition {
            type_: Some($gs_name.to_string()),
            values: Some(vec![
                $(
                    api::ConditionValue {
                        $conditional_value_attr: Some($dv.to_string()),
                        ..Default::default()
                    },
                )*
            ]),
        }
    };
}

macro_rules! validate_date {
    ($gs_name:literal $(, $dv:ident)*) => {
        build_boolean_condition!($gs_name, relative_date $(,$dv)*)
    };
}

macro_rules! validate_str {
    ($gs_name:literal $(, $dv:ident)*) => {
        build_boolean_condition!($gs_name, user_entered_value $(,$dv)*)
    };
}

fn color_style(rgb: &Option<Rgb>) -> Option<api::ColorStyle> {
    if let Some(rgb) = rgb {
        let (r, g, b): (f32, f32, f32) = rgb.into();

        Some(api::ColorStyle {
            rgb_color: Some(api::Color {
                alpha: None,
                red: Some(r),
                green: Some(g),
                blue: Some(b),
            }),
            theme_color: None,
        })
    } else {
        None
    }
}

impl<'a> GoogleSheetsCell<'a> {
    pub(super) fn cell_format(&self) -> Option<api::CellFormat> {
        let borders = self.borders();
        let background_color_style = color_style(&self.0.color);
        let horizontal_alignment = self.horizontal_alignment();
        let number_format = self.number_format();
        let text_format = self.text_format();
        let vertical_alignment = self.vertical_alignment();

        if borders.is_none()
            && background_color_style.is_none()
            && horizontal_alignment.is_none()
            && number_format.is_none()
            && text_format.is_none()
            && vertical_alignment.is_none()
        {
            // don't waste API calls and spreadsheet mutations if everything is blank
            return None;
        }

        Some(api::CellFormat {
            background_color_style,
            borders,
            horizontal_alignment,
            number_format,
            text_format,
            vertical_alignment,
            ..Default::default()
        })
    }

    pub(super) fn data_validation_rule(&self) -> Option<api::DataValidationRule> {
        Some(api::DataValidationRule {
            condition: Some(match self.0.data_validation.as_ref()? {
                DataValidation::Custom(c) => validate_str!("CUSTOM", c),
                DataValidation::DateAfter(d) => validate_date!("DATE_AFTER", d),
                DataValidation::DateBefore(d) => validate_date!("DATE_BEFORE", d),
                DataValidation::DateBetween(da, db) => {
                    validate_date!("DATE_BETWEEN", da, db)
                }
                DataValidation::DateEqualTo(d) => validate_date!("DATE_EQUAL_TO", d),
                DataValidation::DateIsValid => validate_date!("DATE_IS_VALID_DATE"),
                DataValidation::DateNotBetween(da, db) => {
                    validate_date!("DATE_NOT_BETWEEN", da, db)
                }
                DataValidation::DateOnOrAfter(d) => validate_date!("DATE_ON_OR_AFTER", d),
                DataValidation::DateOnOrBefore(d) => {
                    validate_date!("DATE_ON_OR_BEFORE", d)
                }
                // TODO: these might need to be prefixed with `"="`
                DataValidation::NumberBetween(na, nb) => {
                    validate_str!("NUMBER_BETWEEN", na, nb)
                }
                DataValidation::NumberEqualTo(n) => validate_str!("NUMBER_EQUAL_TO", n),
                DataValidation::NumberGreaterThan(n) => {
                    validate_str!("NUMBER_GREATER_THAN", n)
                }
                DataValidation::NumberGreaterThanOrEqualTo(n) => {
                    validate_str!("NUMBER_GREATER_THAN_OR_EQUAL_TO", n)
                }
                DataValidation::NumberLessThan(n) => {
                    validate_str!("NUMBER_LESS_THAN", n)
                }
                DataValidation::NumberLessThanOrEqualTo(n) => {
                    validate_str!("NUMBER_LESS_THAN_OR_EQUAL_TO", n)
                }
                DataValidation::NumberNotBetween(na, nb) => {
                    validate_str!("NUMBER_NOT_BETWEEN", na, nb)
                }
                DataValidation::NumberNotEqualTo(n) => {
                    validate_str!("NUMBER_NOT_EQUAL_TO", n)
                }
                DataValidation::TextContains(t) => validate_str!("TEXT_CONTAINS", t),
                DataValidation::TextDoesNotContain(t) => {
                    validate_str!("TEXT_DOES_NOT_CONTAIN", t)
                }
                DataValidation::TextEqualTo(t) => validate_str!("TEXT_EQUAL_TO", t),
                DataValidation::TextIsValidEmail => validate_str!("TEXT_IS_VALID_EMAIL"),
                DataValidation::TextIsValidUrl => validate_str!("TEXT_IS_VALID_URL"),
                DataValidation::ValueInList(list) => api::BooleanCondition {
                    type_: Some("VALUE_IN_LIST".to_string()),
                    values: Some(
                        list.iter()
                            .map(|l| api::ConditionValue {
                                user_entered_value: Some(l.to_string()),
                                ..Default::default()
                            })
                            .collect(),
                    ),
                },
                DataValidation::ValueInRange(a1) => validate_str!("VALUE_IN_RANGE", a1),
            }),
            // TODO: show a helpful message?
            input_message: None,
            // TODO: I dunno?
            show_custom_ui: None,
            // TODO: build this into the syntax
            strict: None,
        })
    }

    fn border_side(&self, side: BorderSide) -> Option<api::Border> {
        if self.0.borders.contains(&side) {
            Some(self.border())
        } else {
            None
        }
    }

    /// <https://developers.google.com/apps-script/reference/spreadsheet/border-style>
    fn border_style(&self) -> Option<String> {
        self.0.border_style.map(|bs| {
            match bs {
                BorderStyle::Dashed => "DASHED",
                BorderStyle::Dotted => "DOTTED",
                BorderStyle::Double => "DOUBLE",
                BorderStyle::Solid => "SOLID",
                BorderStyle::SolidMedium => "SOLID_MEDIUM",
                BorderStyle::SolidThick => "SOLID_THICK",
            }
            .to_string()
        })
    }

    fn borders(&self) -> Option<api::Borders> {
        if self.0.borders.is_empty() {
            return None;
        }

        Some(api::Borders {
            bottom: self.border_side(BorderSide::Bottom),
            left: self.border_side(BorderSide::Left),
            right: self.border_side(BorderSide::Right),
            top: self.border_side(BorderSide::Top),
        })
    }

    fn border(&self) -> api::Border {
        api::Border {
            color_style: color_style(&self.0.border_color),
            // TODO: I might need to do a mapping to the google style formats here
            style: self.border_style(),
            ..Default::default()
        }
    }

    fn format_as_option(&self, format: TextFormat) -> Option<bool> {
        if self.0.text_formats.contains(&format) {
            Some(true)
        } else {
            None
        }
    }

    fn horizontal_alignment(&self) -> Option<String> {
        self.0.horizontal_align.map(|ha| {
            match ha {
                HorizontalAlign::Left => "LEFT",
                HorizontalAlign::Center => "MIDDLE",
                HorizontalAlign::Right => "RIGHT",
            }
            .to_string()
        })
    }

    /// <https://developers.google.com/sheets/api/reference/rest/v4/spreadsheets/cells#numberformat>
    /// <https://docs.rs/google-sheets4/latest/google_sheets4/api/struct.NumberFormat.html>
    fn number_format(&self) -> Option<api::NumberFormat> {
        self.0.number_format.map(|nf| {
            let nf_type = match nf {
                NumberFormat::Currency => "CURRENCY",
                NumberFormat::Date => "DATE",
                NumberFormat::DateTime => "DATE_TIME",
                NumberFormat::Number => "NUMBER",
                NumberFormat::Percent => "PERCENT",
                NumberFormat::Text => "TEXT",
                NumberFormat::Time => "TIME",
                NumberFormat::Scientific => "SCIENTIFIC",
            }
            .to_string();

            api::NumberFormat {
                type_: Some(nf_type),
                pattern: None,
            }
        })
    }

    fn text_format(&self) -> Option<api::TextFormat> {
        let bold = self.format_as_option(TextFormat::Bold);
        let font_family = self.0.font_family.clone();
        let font_size = self.0.font_size.map(i32::from);
        let foreground_color_style = color_style(&self.0.font_color);
        let italic = self.format_as_option(TextFormat::Italic);
        let strikethrough = self.format_as_option(TextFormat::Strikethrough);
        let underline = self.format_as_option(TextFormat::Underline);

        if font_family.is_none()
            && font_size.is_none()
            && foreground_color_style.is_none()
            && bold.is_none()
            && italic.is_none()
            && strikethrough.is_none()
            && underline.is_none()
        {
            return None;
        }

        Some(api::TextFormat {
            bold,
            font_family,
            font_size,
            foreground_color: None,
            foreground_color_style,
            italic,
            link: None,
            strikethrough,
            underline,
        })
    }

    fn vertical_alignment(&self) -> Option<String> {
        self.0.vertical_align.map(|va| {
            match va {
                VerticalAlign::Top => "TOP",
                VerticalAlign::Center => "MIDDLE",
                VerticalAlign::Bottom => "BOTTOM",
            }
            .to_string()
        })
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn cell_format_none() {
        let cell = Cell::default();
        let gs_cell = GoogleSheetsCell(&cell);

        assert!(gs_cell.cell_format().is_none());
    }

    #[test]
    fn cell_format_some() {
        let mut cell = Cell::default();
        cell.text_formats.insert(TextFormat::Bold);
        cell.vertical_align = Some(VerticalAlign::Top);
        cell.horizontal_align = Some(HorizontalAlign::Right);
        cell.number_format = Some(NumberFormat::Date);
        cell.color = Some(Rgb::new(255, 0, 0));
        cell.borders.insert(BorderSide::All);

        let gs_cell = GoogleSheetsCell(&cell);
        let cell_format = gs_cell.cell_format().unwrap();

        assert!(cell_format.borders.is_some());
        assert!(cell_format.background_color_style.is_some());
        assert!(cell_format.number_format.is_some());
        assert!(cell_format.text_format.is_some());
        assert!(cell_format.vertical_alignment.is_some());
        assert!(cell_format.horizontal_alignment.is_some());
    }

    #[test]
    fn data_validation_rule_none() {
        let cell = Cell::default();
        let gs_cell = GoogleSheetsCell(&cell);

        assert!(gs_cell.data_validation_rule().is_none());
    }

    #[test]
    fn data_validation_rule_some() {
        let cell = Cell {
            data_validation: Some(DataValidation::DateIsValid),
            ..Default::default()
        };
        let gs_cell = GoogleSheetsCell(&cell);

        assert!(gs_cell.data_validation_rule().is_some());
    }
}