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use reqwest::StatusCode;

use super::drawings::{
    DrawingDto, DrawingVariant, UpdateAddDateDrawingDto, UpdateDrawingsDto, UpdateNotesDrawingDto,
    UpdateRemoveDateDrawingDto,
};
use crate::{
    error::ServiceError,
    model::{
        entity::drawings::{Drawing, UpdateDrawing},
        r#enum::drawing_shape_type::DrawingShapeType,
    },
};

/// In case of a logic bug: If the JSON in the db
/// doesn't match `DrawingVariant`, we return 500.
fn _internal_server_error_mismatch_json(_: serde_json::Error) -> ServiceError {
    ServiceError::new(
        StatusCode::INTERNAL_SERVER_ERROR,
        "mismatch between database json and drawings properties",
    )
}

impl TryFrom<(DrawingShapeType, serde_json::Value)> for DrawingVariant {
    type Error = serde_json::Error;

    fn try_from(value: (DrawingShapeType, serde_json::Value)) -> Result<Self, Self::Error> {
        let (shape_type, val) = value;
        match shape_type {
            DrawingShapeType::Rectangle => serde_json::from_value(val).map(Self::Rectangle),
            DrawingShapeType::Ellipse => serde_json::from_value(val).map(Self::Ellipse),
            DrawingShapeType::FreeLine => serde_json::from_value(val).map(Self::FreeLine),
            DrawingShapeType::BezierPolygon => serde_json::from_value(val).map(Self::BezierPolygon),
            DrawingShapeType::LabelText => serde_json::from_value(val).map(Self::LabelText),
            DrawingShapeType::Image => serde_json::from_value(val).map(Self::Image),
        }
    }
}

impl TryFrom<DrawingVariant> for (DrawingShapeType, serde_json::Value) {
    type Error = serde_json::Error;

    fn try_from(drawing_variant: DrawingVariant) -> Result<Self, Self::Error> {
        Ok(match drawing_variant {
            DrawingVariant::Rectangle(x) => (DrawingShapeType::Rectangle, serde_json::to_value(x)?),
            DrawingVariant::Ellipse(x) => (DrawingShapeType::Ellipse, serde_json::to_value(x)?),
            DrawingVariant::FreeLine(x) => (DrawingShapeType::FreeLine, serde_json::to_value(x)?),
            DrawingVariant::BezierPolygon(x) => {
                (DrawingShapeType::BezierPolygon, serde_json::to_value(x)?)
            }
            DrawingVariant::LabelText(x) => (DrawingShapeType::LabelText, serde_json::to_value(x)?),
            DrawingVariant::Image(x) => (DrawingShapeType::Image, serde_json::to_value(x)?),
        })
    }
}

impl TryFrom<Drawing> for DrawingDto {
    type Error = ServiceError;

    fn try_from(drawing: Drawing) -> Result<Self, Self::Error> {
        let drawing_variant = DrawingVariant::try_from((drawing.shape_type, drawing.properties))
            .map_err(_internal_server_error_mismatch_json)?;
        Ok(Self {
            id: drawing.id,
            variant: drawing_variant,
            layer_id: drawing.layer_id,
            add_date: drawing.add_date,
            remove_date: drawing.remove_date,
            rotation: drawing.rotation,
            scale_x: drawing.scale_x,
            scale_y: drawing.scale_y,
            x: drawing.x,
            y: drawing.y,
            notes: drawing.notes,
        })
    }
}

impl TryFrom<DrawingDto> for Drawing {
    type Error = ServiceError;

    fn try_from(drawing_dto: DrawingDto) -> Result<Self, Self::Error> {
        let (shape_type, properties) = drawing_dto
            .variant
            .try_into()
            .map_err(_internal_server_error_mismatch_json)?;
        Ok(Self {
            id: drawing_dto.id,
            shape_type,
            layer_id: drawing_dto.layer_id,
            add_date: drawing_dto.add_date,
            remove_date: drawing_dto.remove_date,
            rotation: drawing_dto.rotation,
            scale_x: drawing_dto.scale_x,
            scale_y: drawing_dto.scale_y,
            x: drawing_dto.x,
            y: drawing_dto.y,
            properties,
            notes: drawing_dto.notes,
        })
    }
}

impl TryFrom<DrawingDto> for UpdateDrawing {
    type Error = ServiceError;

    fn try_from(drawing_dto: DrawingDto) -> Result<Self, Self::Error> {
        let (shape_type, properties) = drawing_dto
            .variant
            .try_into()
            .map_err(_internal_server_error_mismatch_json)?;

        Ok(Self {
            id: drawing_dto.id,
            shape_type: Some(shape_type),
            layer_id: Some(drawing_dto.layer_id),
            add_date: Some(drawing_dto.add_date),
            remove_date: Some(drawing_dto.remove_date),
            rotation: Some(drawing_dto.rotation),
            scale_x: Some(drawing_dto.scale_x),
            scale_y: Some(drawing_dto.scale_y),
            x: Some(drawing_dto.x),
            y: Some(drawing_dto.y),
            properties: Some(properties),
            notes: Some(drawing_dto.notes),
        })
    }
}

impl From<UpdateAddDateDrawingDto> for UpdateDrawing {
    fn from(dto: UpdateAddDateDrawingDto) -> Self {
        Self {
            id: dto.id,
            add_date: Some(dto.add_date),
            ..Default::default()
        }
    }
}

impl From<UpdateRemoveDateDrawingDto> for UpdateDrawing {
    fn from(dto: UpdateRemoveDateDrawingDto) -> Self {
        Self {
            id: dto.id,
            remove_date: Some(dto.remove_date),
            ..Default::default()
        }
    }
}

impl From<UpdateNotesDrawingDto> for UpdateDrawing {
    fn from(dto: UpdateNotesDrawingDto) -> Self {
        Self {
            id: dto.id,
            notes: Some(dto.notes),
            ..Default::default()
        }
    }
}

impl TryFrom<UpdateDrawingsDto> for Vec<UpdateDrawing> {
    type Error = ServiceError;

    fn try_from(dto: UpdateDrawingsDto) -> Result<Self, Self::Error> {
        match dto {
            UpdateDrawingsDto::Update(vec) => vec.into_iter().map(DrawingDto::try_into).collect(),
            UpdateDrawingsDto::UpdateAddDate(vec) => Ok(vec.into_iter().map(Into::into).collect()),
            UpdateDrawingsDto::UpdateRemoveDate(vec) => {
                Ok(vec.into_iter().map(Into::into).collect())
            }
            UpdateDrawingsDto::UpdateNotes(vec) => Ok(vec.into_iter().map(Into::into).collect()),
        }
    }
}