import BaseUIElement from "./BaseUIElement"
import Combine from "./Base/Combine"
import Svg from "../Svg"
import Title from "./Base/Title"
import Toggle from "./Input/Toggle"
import { SubtleButton } from "./Base/SubtleButton"
import LayoutConfig from "../Models/ThemeConfig/LayoutConfig"
import ValidatedTextField from "./Input/ValidatedTextField"
import { Utils } from "../Utils"
import { UIEventSource } from "../Logic/UIEventSource"
import { VariableUiElement } from "./Base/VariableUIElement"
import { FixedUiElement } from "./Base/FixedUiElement"
import { Tiles } from "../Models/TileRange"
import { LocalStorageSource } from "../Logic/Web/LocalStorageSource"
import { DropDown } from "./Input/DropDown"
import { AllKnownLayouts } from "../Customizations/AllKnownLayouts"
import MinimapImplementation from "./Base/MinimapImplementation"
import { OsmConnection } from "../Logic/Osm/OsmConnection"
import { BBox } from "../Logic/BBox"
import MapState from "../Logic/State/MapState"
import FeaturePipeline from "../Logic/FeatureSource/FeaturePipeline"
import LayerConfig from "../Models/ThemeConfig/LayerConfig"
import TagRenderingConfig from "../Models/ThemeConfig/TagRenderingConfig"
import FeatureSource from "../Logic/FeatureSource/FeatureSource"
import List from "./Base/List"
import { QueryParameters } from "../Logic/Web/QueryParameters"
import { SubstitutedTranslation } from "./SubstitutedTranslation"
import { AutoAction } from "./Popup/AutoApplyButton"
import DynamicGeoJsonTileSource from "../Logic/FeatureSource/TiledFeatureSource/DynamicGeoJsonTileSource"
import themeOverview from "../assets/generated/theme_overview.json"

class AutomationPanel extends Combine {
    private static readonly openChangeset = new UIEventSource<number>(undefined)

    constructor(
        layoutToUse: LayoutConfig,
        indices: number[],
        extraCommentText: UIEventSource<string>,
        tagRenderingToAutomate: { layer: LayerConfig; tagRendering: TagRenderingConfig }
    ) {
        const layerId = tagRenderingToAutomate.layer.id
        const trId = tagRenderingToAutomate.tagRendering.id
        const tileState = LocalStorageSource.GetParsed(
            "automation-tile_state-" + layerId + "-" + trId,
            {}
        )
        const logMessages = new UIEventSource<string[]>([])
        if (indices === undefined) {
            throw "No tiles loaded - can not automate"
        }
        const openChangeset = AutomationPanel.openChangeset

        openChangeset.addCallbackAndRun((cs) =>
            console.trace("Sync current open changeset to:", cs)
        )

        const nextTileToHandle = tileState.map((handledTiles) => {
            for (const index of indices) {
                if (handledTiles[index] !== undefined) {
                    // Already handled
                    continue
                }
                return index
            }
            return undefined
        })
        nextTileToHandle.addCallback((t) => console.warn("Next tile to handle is", t))

        const neededTimes = new UIEventSource<number[]>([])
        const automaton = new VariableUiElement(
            nextTileToHandle.map((tileIndex) => {
                if (tileIndex === undefined) {
                    return new FixedUiElement("All done!").SetClass("thanks")
                }
                console.warn("Triggered map on nextTileToHandle", tileIndex)
                const start = new Date()
                return AutomationPanel.TileHandler(
                    layoutToUse,
                    tileIndex,
                    layerId,
                    tagRenderingToAutomate.tagRendering,
                    extraCommentText,
                    (result, logMessage) => {
                        const end = new Date()
                        const timeNeeded = (end.getTime() - start.getTime()) / 1000
                        neededTimes.data.push(timeNeeded)
                        neededTimes.ping()
                        tileState.data[tileIndex] = result
                        tileState.ping()
                        if (logMessage !== undefined) {
                            logMessages.data.push(logMessage)
                            logMessages.ping()
                        }
                    }
                )
            })
        )

        const statistics = new VariableUiElement(
            tileState.map((states) => {
                let total = 0
                const perResult = new Map<string, number>()
                for (const key in states) {
                    total++
                    const result = states[key]
                    perResult.set(result, (perResult.get(result) ?? 0) + 1)
                }

                let sum = 0
                neededTimes.data.forEach((v) => {
                    sum = sum + v
                })
                let timePerTile = sum / neededTimes.data.length

                return new Combine([
                    "Handled " + total + "/" + indices.length + " tiles: ",
                    new List(
                        Array.from(perResult.keys()).map((key) => key + ": " + perResult.get(key))
                    ),
                    "Handling one tile needs " +
                        Math.floor(timePerTile * 100) / 100 +
                        "s on average. Estimated time left: " +
                        Utils.toHumanTime((indices.length - total) * timePerTile),
                ]).SetClass("flex flex-col")
            })
        )

        super([
            statistics,
            automaton,
            new SubtleButton(undefined, "Clear fixed").onClick(() => {
                const st = tileState.data
                for (const tileIndex in st) {
                    if (st[tileIndex] === "fixed") {
                        delete st[tileIndex]
                    }
                }

                tileState.ping()
            }),
            new VariableUiElement(logMessages.map((logMessages) => new List(logMessages))),
        ])
        this.SetClass("flex flex-col")
    }

    private static TileHandler(
        layoutToUse: LayoutConfig,
        tileIndex: number,
        targetLayer: string,
        targetAction: TagRenderingConfig,
        extraCommentText: UIEventSource<string>,
        whenDone: (result: string, logMessage?: string) => void
    ): BaseUIElement {
        const state = new MapState(layoutToUse, { attemptLogin: false })
        extraCommentText.syncWith(state.changes.extraComment)
        const [z, x, y] = Tiles.tile_from_index(tileIndex)
        state.locationControl.setData({
            zoom: z,
            lon: x,
            lat: y,
        })
        state.currentBounds.setData(BBox.fromTileIndex(tileIndex))

        let targetTiles: UIEventSource<FeatureSource[]> = new UIEventSource<FeatureSource[]>([])
        const pipeline = new FeaturePipeline((tile) => {
            const layerId = tile.layer.layerDef.id
            if (layerId === targetLayer) {
                targetTiles.data.push(tile)
                targetTiles.ping()
            }
        }, state)

        state.locationControl.ping()
        state.currentBounds.ping()
        const stateToShow = new UIEventSource("")

        pipeline.runningQuery.map(
            async (isRunning) => {
                if (targetTiles.data.length === 0) {
                    stateToShow.setData("No data loaded yet...")
                    return
                }
                if (isRunning) {
                    stateToShow.setData(
                        "Waiting for all layers to be loaded... Has " +
                            targetTiles.data.length +
                            " tiles already"
                    )
                    return
                }
                if (targetTiles.data.length === 0) {
                    stateToShow.setData("No features found to apply the action")
                    whenDone("empty")
                    return true
                }
                stateToShow.setData("Gathering applicable elements")

                let handled = 0
                let inspected = 0
                let log = []
                for (const targetTile of targetTiles.data) {
                    for (const ffs of targetTile.features.data) {
                        inspected++
                        if (inspected % 10 === 0) {
                            stateToShow.setData(
                                "Inspected " +
                                    inspected +
                                    " features, updated " +
                                    handled +
                                    " features"
                            )
                        }
                        const feature = ffs.feature
                        const renderingTr = targetAction.GetRenderValue(feature.properties)
                        const rendering = renderingTr.txt
                        log.push(
                            "<a href='https://openstreetmap.org/" +
                                feature.properties.id +
                                "' target='_blank'>" +
                                feature.properties.id +
                                "</a>: " +
                                new SubstitutedTranslation(
                                    renderingTr,
                                    new UIEventSource<any>(feature.properties),
                                    undefined
                                ).ConstructElement().textContent
                        )
                        const actions = Utils.NoNull(
                            SubstitutedTranslation.ExtractSpecialComponents(rendering).map(
                                (obj) => obj.special
                            )
                        )
                        for (const action of actions) {
                            const auto = <AutoAction>action.func
                            if (auto.supportsAutoAction !== true) {
                                continue
                            }

                            await auto.applyActionOn(
                                {
                                    layoutToUse: state.layoutToUse,
                                    changes: state.changes,
                                },
                                state.allElements.getEventSourceById(feature.properties.id),
                                action.args
                            )
                            handled++
                        }
                    }
                }
                stateToShow.setData(
                    "Done! Inspected " + inspected + " features, updated " + handled + " features"
                )

                if (inspected === 0) {
                    whenDone("empty")
                    return true
                }

                if (handled === 0) {
                    whenDone("no-action", "Inspected " + inspected + " elements: " + log.join("; "))
                } else {
                    state.osmConnection.AttemptLogin()
                    state.changes.flushChanges("handled tile automatically, time to flush!")
                    whenDone(
                        "fixed",
                        "Updated " +
                            handled +
                            " elements, inspected " +
                            inspected +
                            ": " +
                            log.join("; ")
                    )
                }
                return true
            },
            [targetTiles]
        )

        return new Combine([
            new Title("Performing action for tile " + tileIndex, 1),
            new VariableUiElement(stateToShow),
        ]).SetClass("flex flex-col")
    }
}

class AutomatonGui {
    constructor() {
        const osmConnection = new OsmConnection({
            singlePage: false,
            oauth_token: QueryParameters.GetQueryParameter("oauth_token", "OAuth token"),
        })

        new Combine([
            new Combine([
                Svg.robot_svg().SetClass("w-24 h-24 p-4 rounded-full subtle-background"),
                new Combine([
                    new Title("MapComplete Automaton", 1),
                    "This page helps to automate certain tasks for a theme. Expert use only.",
                ]).SetClass("flex flex-col m-4"),
            ]).SetClass("flex"),
            new Toggle(
                AutomatonGui.GenerateMainPanel(),
                new SubtleButton(Svg.osm_logo_svg(), "Login to get started").onClick(() =>
                    osmConnection.AttemptLogin()
                ),
                osmConnection.isLoggedIn
            ),
        ])
            .SetClass("block p-4")
            .AttachTo("main")
    }

    private static GenerateMainPanel(): BaseUIElement {
        const themeSelect = new DropDown<string>(
            "Select a theme",
            Array.from(themeOverview).map((l) => ({ value: l.id, shown: l.id }))
        )

        LocalStorageSource.Get("automation-theme-id", "missing_streets").syncWith(
            themeSelect.GetValue()
        )

        const tilepath = ValidatedTextField.ForType("url").ConstructInputElement({
            placeholder: "Specifiy the path of the overview",
            inputStyle: "width: 100%",
        })
        tilepath.SetClass("w-full")
        LocalStorageSource.Get("automation-tile_path").syncWith(tilepath.GetValue(), true)

        let tilesToRunOver = tilepath.GetValue().bind((path) => {
            if (path === undefined) {
                return undefined
            }
            return UIEventSource.FromPromiseWithErr(Utils.downloadJsonCached(path, 1000 * 60 * 60))
        })

        const targetZoom = 14

        const tilesPerIndex = tilesToRunOver.map((tiles) => {
            if (tiles === undefined || tiles["error"] !== undefined) {
                return undefined
            }
            let indexes: number[] = []
            const tilesS = tiles["success"]
            DynamicGeoJsonTileSource.RegisterWhitelist(tilepath.GetValue().data, tilesS)
            const z = Number(tilesS["zoom"])
            for (const key in tilesS) {
                if (key === "zoom") {
                    continue
                }
                const x = Number(key)
                const ys = tilesS[key]
                indexes.push(...ys.map((y) => Tiles.tile_index(z, x, y)))
            }

            console.log("Got ", indexes.length, "indexes")
            let rezoomed = new Set<number>()
            for (const index of indexes) {
                let [z, x, y] = Tiles.tile_from_index(index)
                while (z > targetZoom) {
                    z--
                    x = Math.floor(x / 2)
                    y = Math.floor(y / 2)
                }
                rezoomed.add(Tiles.tile_index(z, x, y))
            }

            return Array.from(rezoomed)
        })

        const extraComment = ValidatedTextField.ForType("text").ConstructInputElement()
        LocalStorageSource.Get("automaton-extra-comment").syncWith(extraComment.GetValue())

        return new Combine([
            themeSelect,
            "Specify the path to a tile overview. This is a hosted .json of the format {x : [y0, y1, y2], x1: [y0, ...]} where x is a string and y are numbers",
            tilepath,
            "Add an extra comment:",
            extraComment,
            new VariableUiElement(
                extraComment
                    .GetValue()
                    .map((c) => "Your comment is " + (c?.length ?? 0) + "/200 characters long")
            ).SetClass("subtle"),
            new VariableUiElement(
                tilesToRunOver.map((t) => {
                    if (t === undefined) {
                        return "No path given or still loading..."
                    }
                    if (t["error"] !== undefined) {
                        return new FixedUiElement("Invalid URL or data: " + t["error"]).SetClass(
                            "alert"
                        )
                    }

                    return new FixedUiElement(
                        "Loaded " + tilesPerIndex.data.length + " tiles to automated over"
                    ).SetClass("thanks")
                })
            ),
            new VariableUiElement(
                themeSelect
                    .GetValue()
                    .map((id) => AllKnownLayouts.allKnownLayouts.get(id))
                    .map(
                        (layoutToUse) => {
                            if (layoutToUse === undefined) {
                                return new FixedUiElement("Select a valid layout")
                            }
                            if (
                                tilesPerIndex.data === undefined ||
                                tilesPerIndex.data.length === 0
                            ) {
                                return "No tiles given"
                            }

                            const automatableTagRenderings: {
                                layer: LayerConfig
                                tagRendering: TagRenderingConfig
                            }[] = []
                            for (const layer of layoutToUse.layers) {
                                for (const tagRendering of layer.tagRenderings) {
                                    if (tagRendering.group === "auto") {
                                        automatableTagRenderings.push({
                                            layer,
                                            tagRendering: tagRendering,
                                        })
                                    }
                                }
                            }
                            console.log("Automatable tag renderings:", automatableTagRenderings)
                            if (automatableTagRenderings.length === 0) {
                                return new FixedUiElement(
                                    'This theme does not have any tagRendering with "group": "auto" set'
                                ).SetClass("alert")
                            }
                            const pickAuto = new DropDown("Pick the action to automate", [
                                {
                                    value: undefined,
                                    shown: "Pick an option",
                                },
                                ...automatableTagRenderings.map((config) => ({
                                    shown: config.layer.id + " - " + config.tagRendering.id,
                                    value: config,
                                })),
                            ])

                            return new Combine([
                                pickAuto,
                                new VariableUiElement(
                                    pickAuto
                                        .GetValue()
                                        .map((auto) =>
                                            auto === undefined
                                                ? undefined
                                                : new AutomationPanel(
                                                      layoutToUse,
                                                      tilesPerIndex.data,
                                                      extraComment.GetValue(),
                                                      auto
                                                  )
                                        )
                                ),
                            ])
                        },
                        [tilesPerIndex]
                    )
            ).SetClass("flex flex-col"),
        ]).SetClass("flex flex-col")
    }
}

MinimapImplementation.initialize()

new AutomatonGui()